Think about what search terms you are going to use. If you search for "Ethics", you will get a lot of results.
Whenever you are searching for information ask yourself:
Gathering Background Information
As you get started, you can get ideas from class discussions or readings.
(You can also look at the bibliographies of class readings, and search for those items if they sound relevent)
If it is a topic you are just getting started with, look for background Information in reference resources.
Reference resources allow you to:
Try searching for relevant entries in the Stanford Encyclopedia of Philosophy: