There are many approaches to searching the Internet and the one you take will depend on the kind of information you are looking for.

What is on the Internet | Search engines | Subject directories
Academic resources

You can find just about anything on the Internet including statistics, news stories, government publications, company information, and much, much more. However, keep in mind that not all types of information are available on the Internet, and especially not for free.

In addition Internet documents have not necessarily been evaluated; you need to assess the quality of the documents you find.