Really helped prepare for the AP exam. The practice tests are key. They really get you a good feel for the exam. Princeton Review does a great job.

This book will easily get anyone who really understands it a 5 on the exam, especially if you can score well on the practice tests in the back. It's better for review, rather than learning. If you want an AP book that you can learn from, I suggest using 5 Steps to a 5. I never really understood electromagnetic induction or nuclear physics from my textbook, and this book was even worse for that, but 5 Steps to a 5 cleared up all my issues with those topics in about an hour. I think that this book is way better for review, though, mostly because the questions they ask at the end of each chapter are better and help your understanding of the concepts.

Don't be discouraged if you don't score well on the practice tests in the back, because the actual AP exam is much more conceptual and less calculation-based. But if you can do the Princeton Review tests, you'll have no problem with the real one. It's not overly difficult though, so don't let that discourage you from buying it.

Overall, this definitely gets a 5/5 for its explanations and for being so concise and on target regarding information the exam will test you on.