I found what may be the greatest site ever, www.studystack.com, for helping you learn vocabulary and important factual information.  You can create your own study materials, or use those created by others.  Below are the "stacks" I have created especially for your use in this class.  If this is helpful to you all, I will continue adding stacks as the year progresses and the AP exam approaches.

(There are additional resources listed below the links to the stacks, so be sure to check the whole page!)