<p>Off the top of my head, I’d recommend PR For Calculus, and I’ve heard CliffsAP is good for English Language. Most people don’t buy a prep book for English though. It might suffice just to read the tips and stuff while at the bookstore or library, but it can also be useful to purchase for the MC practice questions. Your essays can only be accurately graded by your teacher though. (and even then they might not be entirely accurate)</p>