<p>Hi, I'm planning to take the AP Calc exam next year. I'm in IB Math SL year one right now. Which prep book would you recommend me buying?? I heard Barron's is more difficult...how about the other ones (Princeton Review, for example)? Thanks :)</p>
<p>In my class, we go through the princeton review, it gives just the right amount of practice problems. Some of the explanations in the back are a bit longer than necessary, but you’ll get the picture. Over all, I like using it, it’s easy to read, and is a great reinforcer.</p>