Google is a great place to get started, especially if there's a handy wikipedia page right near the top. Remember to use your term diaries to keep track of words and phrases you find so that you can use those in future searches both here and elseshere.
Another great place to start is a reference source. These are written for an academic audience and the best entries are those that give you clues about where you might look next (other entries, similar names, and especially "further reading").
Remember to try keyword searches, examine the information for relevant looking articles, and make notes about the subject terms that you find there. Then you can do a combination of subject and keyword searching. If you should find an article that looks good but does not have the full text attached, click the "Find It" button to see if we have that article elsewhere at Carleton. Remember that you can instantly limit most searches so that you get only scholarly articles.