Monday, September 20, 2010

Searching for Information on the Web

The Web is a global resource of information. One primary use of the Web is to conduct research by searching for specific information, including text, graphics, audio, and video.
The first step in successful searching is to identify the main idea or concept in the topic about which you are seeking information. Determine any synonyms, alternate spellings, or variant word forms for the topic. Then, use a search tool to locate the information.
Two types of search tools are search engines and subject directories. A search engine is a program that finds Web sites, Web pages, images, videos, news> and other information related to a specific topic. A subject directory classifies Web pages in an organized set of cate-gories, such as sports or shopping, and related subcategories.
Some Web sites offer the functionality of both a search engine and a .subject directory. Google and Yahoo!, for example, are widely used search engines that also provide a subject direc¬tory To use Google or Yahoo!, you enter the Web address (google.com or yahoo.com) in the Address bar in a browser window. The table in Figure 2-10 lists the Web addresses of several popular general-purpose search engines and subject directories.

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