Use the Image Viewer Interface

When you do a normal Google search and then click a search result, you're sent to a web page. That's not how Google Image Search works. Instead, you're sent to an image viewer that gives you more information about the image and takes some actions on the image, as this task shows.

1. Click a Search Result

When you see an image that you want more information about or that you want to use, click the image thumbnail on the search results page.

2. Get Information About the Image

At the top of the page that appears, you find information about the image. You see a thumbnail of the image, the size of the image in pixels and kilobytes, and the URL of the web page on which the image is found. There also might be copyright information about the image. (For more information about images and copyright, see About Images and Copyright Law.

3. View the Image on Its Original Page

The bottom half of the page shows the image on the page on which it was found by Google. If you want more information about the image, it's a good idea to read through the page.

4. See the Full-Size Image

Click the See full-size image link located at the top of the image page to launch the image in its original size in a browser window.

5. Save the Image to Disk

To save the image to your computer's hard disk, right-click the image on its source web page or in the full-size browser window. From the context menu that appears, select Save Picture As. Then select the folder to which you want to save the picture and click Save to save it.

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Browse Through Image Search Results

When you do a search on Google Image Search, the search results are not the same as they are when you do a normal Google search. This task shows you how to browse through the results.

1. Go to Google Image Search
Get to the Google Image Search by going to http://images.google.com or by starting at the Google home page (www.google.com) and clicking the Images link just above the search box.

2. Type Your Search Terms
Google Image Search works like the normal Google search site, so type your search term or terms and press Enter or click Search Images.

3. Browse the Results
The search results page looks different from the normal Google results. You see thumbnails of pictures that match your search. Beneath each picture is information about the image, including the filename; the resolution of the image in pixels; the size of the image in kilobytes; and the site on which the image is found.

4. Sort Images by Size
After you've done your search, you can choose to show only those images of a certain sizesmall, medium, or large. From the Images Showing drop-down list box, select Large Images, Medium Images, or Small Images to specify which size images to display. Note that the image size in this context refers not to the size of the image in kilobytes, but to its resolution size.

5. Search Within Your Results
If you get too many search results, you can fine-tune your search by searching within your results. Scroll to the bottom of the results screen, and click the Search within results link located underneath the search box. A new page appears. Type your new search term (don't retype your original term), and you search within the original results.

6. Browse to the Next Page
As you can with any Google search results page, you can browse to the next page of results by clicking the Next button, located in the navigation area at the very bottom of the results page. Go to a specific page of results by clicking the page number you want to view (click the 1 to return to the first page of results), or click the Back button to go backward through multiple pages of results.

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About Finding Images with Image Search

Finding pictures with Google Image Search is much like finding anything on Google. As you can see in the nearby figure, the search interface is the same bare-bones search you've come to know and love for basic Google.

You perform a basic search for images in the same way you do a basic search on Google. Type your search terms (including any advanced search operators), and Google does its searching magic, combing through hundreds of millions of images to find one that matches that for which you're looking.


But some significant differences exist between using Google Image Search and using Google, and they have to do with the nature of images themselves.

In a normal Google search, Google looks through text it has indexed from hundreds of millions of web pages. Using a complicated series of rules, it decides which pages best match your search terms.

With images, though, things are different. An image is not made up of text; it contains no words. As smart a company as Google is, its search engine cannot examine a picture and know what it's a picture of. To Google, a picture of a zeppelin is no different than a painting by the Renaissance artist Caravaggio or a photograph of Hawaii. Basically, to Google, all three of these images are just bunches of bits.

So how can Google know what those pictures are if it can't decipher them? By using detective work that even Sherlock Holmes would envy. For a start, it looks at the image's filename. If the filename is Caravaggio.jpg, for example, there's a good chance that the image contained in the file is either a portrait of Caravaggio or a painting by Caravaggio.

Google also looks at the text near the image on a web page as well as at the text on the entire web page. Very frequently, web pages include a caption directly above, beneath, or next to an image. Google can associate that caption information with the image. In addition, other text on the web page itself provides more information about the image, and Google extracts that information as well. As an example, look at the nearby figure. The page is a biography of the painter Caravaggio and includes images of his paintings, with the names of the images and more information next to each painting.

So keep in mind when you're doing your Google Image Search that you're actually searching for information Google can find about each image. As you'll see in Perform an Advanced Image Search, this knowledge can help you better narrow your search.

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About Power Searching Strategies

Knowing how to do a search, how to do an advanced search, and how to use search operators goes a long way toward effective Google searching. But even knowing all that won't go all the way.

You need to combine all that technical information you acquired in the first tasks in this chapter with power searching strategiestechniques for crafting searches that give you results as close to possible to that for which you're searching.

Everyone has his own strategies for better searching, and so it's always a good idea to ask others for their ideas. But here are a few hints that should help you with your Google searches:

* Be specific The Web is an enormous place, containing literally billions of pages. Almost any search you do brings back far too much information. So make sure your search is as specific as possible. If you're looking for a history of the making of the album Blonde on Blonde by Bob Dylan, don't just search for "Blonde on Blonde". Try history "Blonde on Blonde" and you'll get better results.
* Be brief More is not always better when it comes to searching. Be as precise as possible with the terms you search for, and you'll get the best possible results. A short, precise search is much more effective than a rambling, imprecise one. So the search term history of castrati is better than history of castrati who were special boy child singers starting in 1600.
* Vary the order of search terms When you do a search, Google looks not only at the terms themselves, but at the order in which you type them. Google applies more weight to the first terms than it does to later terms in the search string. So use more important terms first. However, it's also worth trying to do a search that uses the same search terms, but with the order varied; rearranging your terms sometimes returns exactly the results you want.

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About Google Search Operators

Google enables you to search using search operators, special words and symbols that make it easy to get search results that match as closely as possible the information for which you're looking. You can combine search operators with search terms to form a query, like this:

• AND
You don't need to use this operator because Google adds it by default to searches in which you use multiple terms. It returns results that contain all the terms in the search. So a search for cow collagen (with the implied operator ANDcow AND collagen) returns only those pages in which both cow and collagen appear.

• OR
When you use this operator, Google returns pages on which any of the words are found. So a search for cow OR collagen returns pages in which the word cow appears and pages on which the word collagen appears. An OR search returns many more results than an AND search.

• +
The plus sign is called the inclusion operator and serves an interesting purposeit tells Google to use stop words in a search that it normally ignores. If you wanted to make sure that Google included the word to in a search (Google typically ignores this word when searching), put it in the search as + to. As with the inclusion operator, the plus sign must go next to the word (or next to the quotes surrounding a search phrase) you want to include; there can be no spaces between them.

• *
The asterisk is called a wildcard. For those who are familiar with searches on a computer, Google uses the asterisk in a search similarly to a computer wildcard search. The asterisk must be used in a quoted phrase, like this: "I * New York". When you use this character, Google returns pages that have any words in place of the * on them. A search for "I * New York" would return pages with I Love New York, I Hate New York, and so on.

• ~
The tilde is called the fuzzy operator or synonym operator. When you use this operator, Google searches for pages that contain the specified term as well as synonyms for the term. For example, a search for ~generous would return pages on which the word generous appears, as well those pages that contain synonyms of generous, such as munificent and charitable.

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Perform an Advanced Google Search

If you're doing a search that returns too many results and you want to zoom in on your search results as quickly as possible, the best way to do it is with an advanced search, as you'll learn to do in this task. An advanced search provides many more controls over what results are returned. For example, you can limit the search results to a specific language (instead of changing the options in the Preferences dialog box, as explained in Perform a Basic Google Search, which affects all searches, you can limit just the current search to a specific language), specify words you do not want returned in the search results, and so on.

* Go to the Advanced Search Page
From Google's main search page, click the Advanced Search link to the right of the main search text box at the top of the page. You are sent to the Google Advanced Search page.

* Type Search Terms
The top part of the page, highlighted in blue, enables you to type search terms and to combine them in unique ways. Keep in mind that you can combine several of these options. For example, you can search for pages that have the exact phrase rhubarb patch but that do not have the word Barber on them. Here are your choices:
• The with all of the words option means that Google returns results in which pages contain all your search terms. If a page is missing just one of the terms, it won't be included in the search results.
• The with the exact phrase option means that Google returns results in which pages contain the exact phraseit's the same as putting quotation marks around the words in your search phrase.
• The with at least one of the words option means that Google returns pages that contain any of your search terms. This is the default Google search method.
• The without the words option is meant to be used in combination with one of the previous search options as a way to narrow a search. When you use this option, Google excludes any pages that contain the search terms you type on this line.

* Choose Language, File Format, and Date
The next set of options on the Advanced Search page allows you to narrow your search even further:
• The Language option enables you to narrow the results returned to pages that are primarily written in a single language. Click the drop-down box to make your choice of language. There are dozens of languages from which you can choose. The default search language is any language.
• The File Format option enables you to search for files, rather than web pages. So if you know that a particular piece of information is in a specific file format, use the File Format option to make it easier to find the file. You can search for files in half a dozen formats: Adobe Acrobat (.pdf), Adobe Postscript (.ps), Microsoft Word (.doc), Microsoft Excel (.xls), Microsoft PowerPoint (.ppt), and Rich Text Format (.rtf). You can also tell Google to have your results exclude the selected file formats by choosing Don't from the drop-down list just to the right of File Format. (When you find a .pdf file, for example, Google gives you the option of viewing the content in HTML rather than as a .pdf file.)
• The Date option enables you to specify web pages that have been updated in a specific time period: in the past three months, the past six months, or the past year. You can also leave this option set to the Google default of anytime. Make your choice from the drop-down list.

* Choose Domain, Usage Rights, and SafeSearch
The next set of choices on the Advanced Search page allow you to narrow your search in these ways:
• The Domain option enables you to search through only a specific domain or domains, such as http://www.cnn.com/. To search multiple domains, separate the URLs by commas. You can also exclude domains from your search by selecting Don't from the drop-down box to the right of Domain. (A domain is a main location such as http://www.weather.com/ or http://www.cmp.com/.)
• The Usage Rights option enables you to search through pages or material that is boundor not boundby specific usage rights (that is, by the way in which the information can be used). The default is not filtered by license, which means that Google searches for any material. From the drop-down list, you can make a wide range of choices, from free to use or share, up to free to use, share or modify, even commercially.
• The SafeSearch option enables you to filter searches so they do not contain sexually explicit or inappropriate material.

* Use Page-Specific Search Options
The Page-Specific Search section of the Advanced Search page enables you to do two types of searches:
• Similar enables you to find pages similar to a page you've already found. For example, let's say you've found a page about the Hindenburg disaster, you want to find other pages about the disaster, and you've found that the site www.otr.com/hindenburg.html gave you a great deal of information about the topic. Type that page's URL here and click the related Search button to get similar pages. This option functions the same as if you clicked the Similar pages link on a search results page.
• Links enables you to find pages that link to a specific page. For example, you could type the URL www.otr.com/hindenburg.html and click the related Search button to see all the pages that link to the specified URL. This is a very useful tool if you run a website and you notice a sudden surge in traffic; you can find out where that traffic came from by typing the URL for your home page in the Links box.

* Do Topic-Specific Searches
The final section of the Advanced Search page enables you to search through topic-specific pages (such as pages related to Microsoft or Apple Macintosh) or through scholarly pages. When you click any of the topic-specific searches, you are sent to a new Google page (Google determines which page has the most relevant information). Type your search term on that page, and you'll do a topic-specific search.

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Refine Your Search

For many purposes, a straightforward search as shown in the previous task finds you the information for which you're looking. But there are also many occasions in which a simple search isn't good enough. In that case, you need to refine your search, as you learn to do in this task.


1. Use Multiple Search Terms
The single best way to narrow your results so you find exactly what you want is to use multiple search terms. For example, if you're looking for information about the contemporary classical music composer John Adams, using John Adams as your search terms does not work very wellyou mainly get pages relating to the U.S. president John Adams. If you instead type John Adams Opera, you get the results you want.

2. Use Quotation Marks
When you use multiple search terms, Google does not look at them as a phrase. Instead, it thinks you are looking for pages that contain each of the search terms individually. If you typed the terms Rhubarb Patch, Google would return pages that contained the word rhubarb as well as pages that contained the word patch. You would get far more results than you wanted. If you type "rhubarb patch" in quotation marks, you would instead get only those pages that contained the phrase rhubarb patch.

3. Combine Quotation Marks and Search Terms
Suppose that you were looking for a book written in the early 1950s about the Brooklyn Dodgers, titled The Rhubarb Patch. The best way to find web pages about this book would be to combine the phrase "Rhubarb Patch" and the term Dodgers. (Google ignores capitalization, so it doesn't matter if you use uppercase characters or lowercase characters in your searches.)

4. Search Within a Search
Often the best way to narrow your search is to search within the results you've received from a previous search. To do that, start by performing a basic search. At the bottom of the search results page, beneath the results navigation area and the search text box located there, click the Search within results link. A new, blank search form appears. Type your additional search term or terms the way you normally would in Google and click the Search within results button or press Enter. Google uses the new search terms to narrow your search by searching only through the first set of search

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Browse Through Search Results

After you've typed your search term into the Google search box and received your search results, it's time to get to the good stuffgoing through the actual results, the links to web pages that hopefully discuss the topic in which you're interested, as you'll learn how to do in this task.


1. Scroll Through the Results
Use the scrollbar on the right side of the page to scroll through the results. Read the description of each page as you scroll.

2. Visit a Page
When you find a page whose title or description interests you, click its link. You are sent to the actual page on the Web.

3. Return to Google
When you're done viewing a web page, click your browser's Back button as many times as you need to get back to your Google results page. As a shortcut, you can click the down arrow next to the Back button to see the most recent pages you've visited. Select the Google Search page to return to your results.
If you elected to open the search results in a new window, you must juggle the windows (that is, switch back to the results window, whether or not you close the viewing window).

4. View Similar Pages
A good way to zero in on search results is to find a page that is relevant to your search, and then find pages most similar to that page. So when you find a page with useful information, click the Similar pages link next to it; you should get a list of pages that will help narrow down your search. In the example, I clicked the Similar pages link next to the JOHN LENNON DREAMSITE: HOMEPAGE search result and was shown links to several more pages that related to my search term.

5. Go to More Search Results
At the bottom of the search results page is the navigation area for your search results. Click Next to get to the next page of results. Click Back to get to the previous page. You can also jump ahead several pages in the results (or go to a specific results page you might remember) by clicking a page number. If you've looked through many pages of search results, you can return to the first page of the results by clicking 1.

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About Interpreting Google Results

A Google search results page is a masterpiece of packing a great deal of information into a compact amount of space. But at first glance, it can be difficult to understand all that information and what it all means. Taking a moment or two to examine a typical page helps you get more out of Google.

On the typical search results page shown here, a search was done for john lennon. At the very top of the page is the total number of results Google found, the number of results on the current page, and the amount of time it took to do the search.

Just beneath that information are links for News results. These links all lead to recent news stories about the search term, john lennon. In the example, there are two recent news stories, one from The Sunday Herald and one from the BBC News. Click any link to go to the news story, or click the main link heading, News results for john lennon, to go to a full Google News page of search results. (For more information about using Google News, see Get the News with Google News.

On the right side of the page is a list of sponsored links. These links have all been paid for, and are essentially advertising. But don't ignore them because of that; they often contain services, information, or items for which you're looking. In some instances, a sponsored link appears at the very top of the search results, if an advertiser has paid enough money for that positioning.

Directly below the News results are the heart of the pagethe Google search results. Each result contains a great deal of information:

* The title of the page, which is also the link to the page.

* A short description of the page, just underneath the title.

* The actual URL of the page, underneath the description.

* The size of the page, in kilobytes, to the right of the URL.

* The date the page was last updated, to the right of the URL. (This information is not always available and included.)

* A link to a cached version of the page, to the right of the date. The cached version of the page is a version of the page stored on Google's servers. This link can be useful if the page itself is not currently available, or if it has been moved or changed. In these circumstances, you can click the Cached link to see the version of the page that Google indexed.

* A Similar pages link that displays a list of pages similar to the one listed; this link is located to the right of the Cached link. For example, if you did a search on John Lennon, and you came to a page that was from a biographical website with his biography, a page "similar" to that one would be the page of another biographical website.

* A Remove result link you can click if the result is off-target and you no longer want to see it on the results page.

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Perform a Basic Google Search

Here's where it all beginsdoing a basic Google search. Master this simple task, and you'll go a long way towards mastering Google.



1. Go to Google
To do anything, you need to head to the mother shiphttp://www.google.com/. Google works well with any browser, so it doesn't matter which one you use.

2. Set Your Preferences
If you're going to be a Google regular (and if you're reading this book, it means you are), you should set your preferences for how you want Google to perform searches. Click the Preferences link to the right of the main Google search box, and the Google Preferences page appears.

3. Choose the Language for Google Messages
From the Interface Language drop-down box, choose the language in which you want Google to display tips and messages from Google. (The language you choose affects messages such as the notice at the top of the page that tells you how many results you have and how long it took to get those results.) The choice you make here won't affect the language of the search results; it only affects the messages you get from Google.

4. Choose the Languages for Search Results
In the Search Language section, choose the languages whose pages you want to search. If you want to search all pages, regardless of the language in which they are written, choose the Search for pages written in any language (Recommended) option. You can limit your search to pages in only certain languages by choosing the Search only for pages written in these language(s) option and then enabling the check boxes next to those languages to which you want your search limited.

5. Specify SafeSearch Filter Option
In the SafeSearch Filtering section, choose what level of SafeSearch to use. SafeSearch blocks web pages that contain explicit sexual content. You can choose one of the following levels:

• Strict filtering filters explicit text and explicit images.

• Moderate filtering filters only explicit images (this is Google's default).

• No filtering does not filter search results.

6. Specify Results Per Page
From the Number of Results drop-down box, choose how many search results to display per page. If you display 10 results at a time (the default), your search results are returned the quickest. But if you use a high resolution on your monitor, showing only 10 results per page means wasted screen space, and it takes longer to move from page to page. Experiment to find the best number of results per page based on how you use Google.

Finally, decide whether you want the search results returned in the same window in which you do a search or in a new window. Check the box next to Open search results in a new browser window if you want the results to open in a new window. Opening your search results in a new window leaves your search page intact, but requires you to juggle windows; opening your search results in the same window requires less juggling, but means that you have to keep clicking the Back button to get to your search results after you visit a page.

After you've made all your choices on the Preferences window, click the Save Preferences button. You are sent back to Google's main page.

7. Do a Search
To do a search, simply type your search term or terms into the search box and press Enter or click the Search button.

A page of search results is delivered to you. Browse through the results, and click the title of the web page you want to visit. (For more details about search results, see About Interpreting Google Results. For more about browsing through search results, see Browse Through Search Results.)

8. Use I'm Feeling Lucky
Google does a very good job of taking search results and determining the most relevant pages. If you find yourself trusting Google's search results, click the I'm Feeling Lucky button after you type in your search term. Instead of showing you a page of search results, you are sent directly to the page Google thinks is most relevant to your search terms.

If the page Google's I'm Feeling Lucky feature opened for you isn't what you had hoped for, or if you want to see other results for your search term, return to the main Google search screen by clicking your browser's Back button. The Google search box retains the search term you typed; click the Search button to launch a traditional search.

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A Quick Tour of Google

Google is far more than a search siteit has grown to be a sizable collection of services and tools, and the collection is getting larger all the time. No longer is Google a single search site; instead, it's a conglomeration of multiple sites. And no longer can you even call it Web-based because Google now includes software that you download and run on your PC.

This book often refers to tools and services. Although there is a lot of gray area in the definitions of these two terms, generally a service is a website run by Google. So, for example, the bargain-finding site Froogle (http://www.froogle.com/) is a service because it's a Google-run website; you have to visit it on the Web to use it. Google's image-management software Picasa (http://www.picasa.com/), on the other hand, is software that you download to your PC, and so it considered a tool.

So where are the gray areas? Google Earth is an example of something you could consider both a tool and a service: You have to download it and run it on your PC, but you also have to be connected to the Internet to use it because it gets all its information from Google online. The same holds true for the Google Toolbar, which you download and use on your PC, but also use to search Google.

This book covers all of the major tools and servicesor at least those that were available during the writing of the book. Google introduces new tools and services all the timeand changes or updates its existing onesso what you see when you head to Google might be slightly different from what you read in this book.

Because of that, before reading the rest of the book, it's a good idea to take a quick tour of Google so you can find the newest tools and services on your own.

The nearby figure shows Google's familiar main page. To do a search, type your search terms in the search box. But look beyond the familiar search box. Across the top-right side of the page is a series of links. The links show that I've already signed into Google because the links include Personalized Home, Search History,My Account, and Sign Out. If I hadn't been logged in, only two links would be there: Sign In and Personalized Home. (And when I clicked the Personalized Home link, I'd first have to sign in before I could get to my Personalized Home page.)


Now look at the links just above the search box. These links lead to several of Google's main services and tools. These links might change over time, but at the time this book was written, they linked to Google Image Search (Images); Google Groups (Groups); Google News (News); Froogle (Froogle); Google Local, which used to be called Google Maps (Local); and Google Desktop (Desktop). There's also a more link, which is covered in some more detail. In addition to these links, to the right of the search box are links to Advanced Search (for doing an advanced search), Preferences (which enables you to change your Google preferences), and Language Tools (which enables you to search through pages written in specific languages, and also includes language-translation tools).


Google prides itself on its barebones interface, so it's unlikely that you'll see many more links than what you see here on the front page. But this minimalist interface leads to a conundrum: As you'll see in this book, there are many more Google tools and services than there are links on Google's front page. In fact, this book doesn't cover all the tools and services that Google has because there are too many. So how do you find out about a tool or service, or even discover which ones exist?

That's where the more link comes in. Click it, and you'll see the More, more, more page with the current, comprehensive list of all Google's tools and services. So to get to any of these available features, head to the More, more, more page. For a description of the main tools and services here, see this book's Appendix.

A few links of note are on the page. The web search features link is a great place to go if you want to use Google's many specialized searches, such as for package tracking, stock quotes, music, and more. And the Labs link is the place to go if you want to see what new features Google is cooking up in its labs. New Google tools and services start here. Some experiments don't see the light of day, while others go on to fame and glory.

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Google and Your Privacy

If people fear one thing about Google, it's that Google might invade their privacy in some way. That's a natural fear. As Google creates more and more services, it can gather an increasing amount of information about you. And there are also worries that Google tracks all of your searches, and it could then easily create a personal profile of you and sell the results to the highest bidder.

If you want the whole story of Google's privacy policy, head to the Google Privacy Center at www.google.com/privacy.html. It spells out in a good deal of detail what information Google finds out about you and what it does with that information.

But here, in a nutshell, is the scoop: When you create a Google account, you need to enter basic informationyour email address and password. Google doesn't share that information with any other website.

When someone visits a Google site or does a search using Google, Google servers record information about that visit, including the IP address of the visitor, the URLs, and the date and time of the request.

Google doesn't use that information to build a profile of you or track the searches you do; this information stays on Google's servers. By itself, that information doesn't identify you because Google, by itself, can't match an IP address to an individual. Law enforcement officials, however, can subpoena that information, and they can use it to identify you and the searches you do. They can subpoena your ISP and find out the subscriber name of the person with the IP address at a given time. So based on Google logs and information provided by your ISP, law enforcement officials can identify you and what you do on Google. Google complies with subpoenas.

Google also uses cookies, which are small bits of data placed on your computer that Google uses to recognize you when you log in. Cookies can store your personal preferences and other information. For example, Google uses a cookie to recognize that you have a Google account, so you don't have to log in every time to use some Google services.

In addition, Google shares what it calls "aggregated non-personal information" with other companies. This aggregated information is information that Google records but that isn't tied to an individual. So, for example, it might collect information about what pages are most popular among Google visitors. It aggregates information from many people's Web-surfing activities to get this information. But it doesn't track any single individual's use.

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Sign Up and Manage Your Google Account

Many of the Google tools or services that are websites, such as Gmail, require that you sign up for a Google account. After you have set up an account, you won't have to set it up again. You can use your single Google account as the centerpiece for all of Google's services.

To sign up, head to http://www.google.com/ and click Sign In. On the right side of the page that appears, click the Create an account now link. The page shown in the nearby figure appears.

Fill in an email address, enter a password and retype it, choose your location, type what you see as the weird-looking text in the Word Verification area, read the Terms of Service, and then click I accept. Create my account. That's all it takes; you're signed up and ready to go. When you need to use a Google service from now on, type your email address and password when prompted.

After you have an account, click the My Account link if you want to change your personal information, such as your password and name. From your account page, you also see a list of services for which you've signed up, and you can look for other services that you might want to try.

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How to Download and Install Google Tools

Many Google tools live on the Web and don't require you to install any special software. For example, Gmail, Froogle, and Blogger are all websites; to use them, you only need to point your browser to the right page.

But other tools are software programs that live on your PC, and they require that you download and install them before you can use them. (The Appendix, "Google Tools and Services," lists all the Google tools available to you.) All are installed in the same basic way, as outlined in the following steps. The Google Toolbar is used as an example of how to install software. (To see other downloadable tools, go to http://www.google.com/, click the More link at the top of the page, and then click the Google Downloads link on the left side of the page.)

• Go to the web page that hosts the software. When you get there, you see a link for downloading the software. The nearby figure shows the download page for the Google Toolbar, at http://toolbar.google.com/.

To download the Google Toolbar, click the Download Google Toolbar button. Pretty simple, huh?

• When you're prompted to save the file to disk, save it to a location. Remember where it's located.

• Double-click the file you downloaded. This action begins the installation process.

• Follow the installation instructions. These instructions vary greatly depending on the tool you're installing. Google is very good at giving instructions, so just follow what you find onscreen. But for all installations, you are asked to read a Terms and Conditions statement that outlines how you're allowed to use the software, as you can see in the nearby figure. It's written in a language that only lawyers could love. Read it, click Agree & Continue, and then follow the instructions onscreen.

Follow the instructions, read the Terms and Conditions, click Agree & Continue, and you are ready to go.

• At the end, click Finish. Restart your computer if you're told to do so. If you have to restart your computer, save all your open files and close all your open programs before you restart.

• Begin using the program. The nearby figure shows the Google Toolbar, installed.

You're locked and loadedtime to start using the Google Toolbar.

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Why Use Google Tools ?

Google, as mentioned previously, is more than a search engine. It provides a whole complex of sites and services that this book refers to as Google tools. These tools include things such as Gmail web service, Google Local (previously called Google Maps) search service, and Google Desktop for searching your computer.

Google is such a great search site, but why bother using Google tools? These tools are in many ways as remarkable as the Google search engine itself. Some of these tools are specialized versions of the search engine. For example, Froogle is the Google service for finding online bargains, and Google News is the service that delivers the latest news.

Other tools are extensions of Google. The Google Desktop extends Google's power to your PC, for example. And the Google Toolbar enables you to search Google no matter where you are on the Web.

Still other tools are great services for the Internet, such as Blogger, which enables you to create your own blogs; Gmail, its email service; or Google Talk, which enables you to chat with friends.

So if you're a Google user and haven't used any of its tools, this book will be your guide. And even if you have used its tools, you'll learn inside tips and secrets you didn't know before.

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How Google Works

Before you can understand how Google works, you probably should have a basic idea of how the Web works. When you visit a website, your browser is actually contacting a web server, a computer whose job is to deliver web pages. So when you click a link, your browser contacts the server and says, "Send me this page." The server takes the request and then sends the page to the browser, which displays it on your computer.

Key Term
Server A computer whose job is to perform a specialized task and deliver information. For example, a web server serves up websites, while an email server sends or receives email.

Okay, now that you have that basic background down, let's see how Google works.

In some very basic ways, Google works just like other search engines. Its basic operations are exactly the same. Like all search engines, Google is composed of three parts:

• A spider, also called a crawler This spider "crawls" the Web and finds content on web pages.

• An indexer This software takes all the information the spider gives it and creates a giant index that can be searched.

• A query engine This is what takes your search request, sends it to the indexer, and reports the results to you.

Key Term
Search engine A site that allows you to search the Web.

The Spider
The spider part of the Google search engine is an automated piece of software, also called a robot, that requests many thousands of pages from hundreds of websites simultaneously. When it finds links on pages, it follows those, and requests those as well.

The main Google spider is the GoogleBot, and it essentially crawls the Web once a month. Obviously, many sites change more than once a month, and so Google also has a crawler named FreshBot that crawls pages constantly.

The Indexer
The spiders send information about all the pages they find to the indexer part of the search engine. The indexer then does a pretty amazing jobit creates an index of every word on every page sent to it by the Google spider. Not only does it index every word and every URL, it also keeps a record of where every word is on every page.

Multiple copies of this index are kept on various Google servers. A single server wouldn't be able to keep up with all the search requests that are done.

The Query Engine
The only part of Google that you see is the query engine, and you only see part of that. It's the public face of Googlethat inviting search box at the top of Google pages.

When you type a search term, a Google web server sends your request to the indexer, which is housed on multiple indexing servers. The index servers look through the index and match what they find with your request. The index server then sends that information to document servers, which retrieve the correct information and format it so your browser can understand it. That formatted information is then sent to your browser.

And it all happens in a fraction of a second.

Google's Special Sauce
All this search engine logic is nothing new or revolutionary. This technology has been around for years, long before Google was a glimmer in its founders' eyes.

So why is Google so good at what it does?

Google uses better algorithms than any other search engine, and constantly refines them. Algorithms are sets of rules for performing a particular task. In Google's case, its algorithms are responsible for taking your search request and deciding which results to show you.

Key Term
Algorithm A set of rules for performing a task. In Google's case, algorithms are what determines which pages it says match your search requests.

Google's algorithms aren't particularly easy for mere mortals to understand, they're changing all the time, and they're not made public. Google uses more than 100 factors in its algorithms. For every search you do, it considers all of those factors and then calculates a score for every possible matching page. The page with the highest score is the first search result. The page with the second-highest score is the second search result, and so on.

Some of the metrics are fairly obviousthe search term needs to appear on a page, for example. Google's algorithms also factor in the number of times the term appears on a page, whether the term appears on a prominent part of a page, whether it appears in the title of a page, and many other factors.

None of this is particularly revolutionary, either. Many search engines do the same thing.

Google's real brilliance is in harnessing the collective intelligence of the Web to figure out what was truly relevant, instead of merely relying on these kinds of rules. Google also gives a great deal of weight to the number and kinds of pages that link to a web page. For example, Google figures that if a web page has many sites linking to it, the odds are very good that the page is an important one. And if important sites are linking to that page, it's even more important.

So Google calculates a page rank for each page, and that page rank becomes a very important part of the calculation as well. For example, you do a search, and Google finds your search term five times on a page to which hardly any pages link, but three times on a page (such as on the New York Times website) that has many sites linking to it. The more important page (the New York Times page) appears higher on the search results list, even though the search term appears on it less frequently.

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Why Use Google ?

Let's start off with the most basic question: Why bother to use Google? After all, there are other search sites out there.

It's true that there are other search sites, but none are as fast or effective as Google. Google doesn't necessarily scan more of the Web and index more websites than any other search engine. That's not really what's important. What it does better than any other site is deliver more accurate results. At times, the results seem so uncanny that you almost feel as if Google is reading your mind. (You'll learn more details about why Google is so accurate in the next section, "How Google Works.")

Google does something else exceptionally wellpresenting its search results and enabling you to quickly go to the page you want. Its search results pages load fastthey're not weighted down with unnecessary graphics and adsand they're easy to scan at a glance. Before the days of Google, this wasn't how search sites displayed their results. They were heavy with graphic-rich ads, they were slow to load, and you often had to wade through a great deal of advertising and unnecessary material until you got what you wanted.

With Google, your results are front and center.

There are reasons beyond accuracy and presentation to use Google as well. Google is constantly coming up with new tools to integrate searching and other Web services into your life. Google Desktop, for example, can search your hard disk in the same way that Google searches the Web, and you can even see both sets of results at the same timewhat's on your PC as well as what's on the Web. And there are plenty of other examples like this.

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Start Here

Was the Internet searchable before there was Google?

Sometimes it seems as if it wasn't. True, there were other search sites, such as www.altavista.com, www.askjeeves.com, and www.yahoo.com. But anyone who used those sites remembers that, although they made it easy to search for something, they made it very difficult to actually find anything.

Then Google came along, and suddenly the world changed. It applied its "special sauce" to searching, and the rest is history. Put simply, no search site on the planet comes near to Google in the speed and accuracy of its searches.

But if you think searching is all that Google is about, you're missing a lot. Google offers loads of services in addition to searching, such as maps, email, personalized home pages, free blogging, image-editing software…the list is long and getting longer every day.

This book will help you get the most out of using Google and all of its tools. Whether you want to blog, send and receive mail, take a virtual trip around the world, find a long-lost high school sweetheart, get a great deal online, or a lot more, you've come to the right place.

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