<p>Hey guys, I'm planning to take the AP Computer Science A exam in the spring, but I'm kinda worried about it. Our class is basically just trial and error programming; our teacher doesn't really teach us anything for the exam. I still want to take the exam though...so I'm planning to just self-study out of a prep book. Which prep book is best for this exam? I've seen Barron's and Princeton Review in the bookstore. Thanks!</p>