I was wondering what the best prep book would be for AP world, both for the class and the test. I need lots of help with the class as I am going to be closing the second semester with a B and really want to try to bring it up to at least a B+ or an A- by the end of the year and think I can do it better by using a prep book. My trouble is with the once/twice a quarter tests that have to do with the entire unit or era previously covered. In class, we never study or take notes, just do practice on writing so all studying is really at home reading. I study and I study but I always end up getting in a low B or high C range. I read the textbook and take notes, using sterns chapter notes online as another resource, and study but when the test comes most of the multiple questions are stimulus based and even though I feel as if I studied and am ready, I have lots of difficulty on them and end up getting many wrong :(. I guess my problem would be mainly reading comprehension/not fully grasping the text?? It is hard to narrow down the answers a lot of times. Which prep book would help me most with this now, and later for the exam?