There are many, many of these available and they generally fall into three categories, search engines, meta-search engines and search directories.Search Engines often use an index that is regularly updated to look for files after the you have entered search criteria.Search Engine: you want to search using specific keywordsOnly when you click on a link from the search result, is the current version of the page retrieved. What tools are available?Unless you know the exact address of the site you want to locate, you will need to use a computer program that retrieves documents or files or data from a database or from a computer network. Decide the best way to go about it by asking yourself some questions.l Does your topic have distinctive words or phrases associated with it? Is your topic too general or broad (too many unrelated pages will be found)?l Do you want an overview or would you rather search a specific aspect of your topic? What are you looking for?In order to select the best search tool, you will need to analyze your topic. Where do you start?The first step in any Internet search is to locate a site (or program) that specializes in searching.There are many, many sites available - each one trying to fit the special needs of a variety of users.By selecting the best Search Engine, Meta-search Engine, or Subject Directory you will be able to find what you are looking for in the most efficient manner.