Google can be helpful for your research. Here are some ways to make sure you're getting the best you can out of it:

• Use Google Advanced Search: next to the search box, click on Advanced Search. Use AND, OR, and NOT.
• Use Google Scholar: go up to the top of the Google page, and click on the link "more." Choose Scholar from the list. Google Scholar will bring you back scholarly journal articles; we have access to the ones with links on the right!
• Use Google Books: in the same place you clicked for Scholar, try Books. Some books are available online, full-text, in PDF!
• Use your skepticism: don't forget that Google is primarily a company that exists to make money. Try going to the second and third results pages.