After looking at several different brands of review books for this past year when I took AP World History, I decided on this one. It was more concise than other review books (more big picture, some detail but not as much) and it was recommended by both my teacher and other students. I like it because it focused on the big ideas instead of tiny little details. This was so helpful because if you only know lots of small details, they may not even be on the test. If you understand the big picture that connects all those details, you'll do a lot better because it will help you on the essay section (which I was most scared about) and help you figure out detail-oriented multiple choice questions.
I bought the 2011 Edition of this book, and I'm sure the 2012 one is only better. The author has a sense of humor and explains in normal, everyday talk to simplify what the textbook says. The practice tests are very helpful because they're harder than the actual exam was, so if you can work through them you'll be really prepared for the exam.
I got a 5 on the AP world exam, and I know I would not have been able to do it without this book. I learned a lot in class, but this book helped pull it all together. I only wish I had bought it earlier because I think it would have been loads of help to prepare me for each unit test throughout the year (there are 5 units) as well as the actual exam.
If you're taking AP world, GET THIS BOOK! you won't be sorry!