Despite the lack of quality control, you can find good information on the Web if you know how to search for and evaluate them.

There are several ways to search the Web. Click on the links to explore these. Close each window when you're done.

Search engines, by type

specialized (e.g., Scirus.com, Common Chemistry from Chem Abstracts).

general (e.g., Google, Yahoo!, and Bing)

meta (one search run through several engines at once: e.g., Dogpile)

Using the Advanced Search function of the search engine you prefer can help you filter your search so that you retrieve fewer, more focused results. Take a look at the options offered for limiting your search:
Google
Yahoo!
Bing Click Advanced Search after you get results from a basic search.