Since anyone can put anything on the web, you will need to evaluate what is high quality information and what is not.
The following guides can assist you in evaluating web resources:
Search for books available online as part of Google Books' collection. Google Books will also direct you to copies held in CUA or other nearby libraries.
Google Scholar allows you to search scholarly literature from many different sources, including theses, books, abstracts and articles. Google Scholar can also help you find the full text of scholarly articles either on the web or published in book format in CUA or other nearby libraries.