Today, the World Wide Web can extend students' learning resources around the world. However, the Web has also created a new problem-too much information. Internet search engines provide methods for exploring the Internet. To search the Internet effectively, you have to understand and choose the right search tools. This search tool consists of preselected links with databases that are small compared to general purpose search engines.
Subject directories are great for browsing because they are hierarchical in nature.
They can reduce time spent examining irrelevant sites. However, subject directories may often contain only a small number of Web and Internet documents. Examples of popular subject directories appear below. This search tool is a large database that contains millions of documents. Since far more information is available using keyword indexes than directories, the user must have a definite search strategy to limit the number of results.