There are several ways in which you can find information on the internet, assuming that you don't already have a specific destination in mind. Each one has its uses, advantages and issues.

Search Engines provide the most generalized way to find information. The general purpose search engines search the web, and provide you with a list of sites that contain the words you entered. A good search engine can be a very powerful tool, but like all powerful tools, there is some potential for trouble, too.

Specialized Reference Sources

General Purpose Encyclopedias

Other sites

See How reliable IS it, anyway for some general tips on evaluating a site.