This book really helped me with chemistry. My textbook did not have any practice problems and this was a great supplement to learn the material for my course. The font typeface made it difficult to keep interest at first, but if you stick with it, the material is worthwhile.
Each chapter consists of a brief introductory paragraph with key equations regarding the topic and then it goes right into questions to solve. It has the answers after each problem and makes it easy to cover the answer to see if you can figure out the problem as a study guide.
I would not recommend this to people that have a solid understanding already and are looking for AP testing. The title describes what it does: It provides you the tools to analyze a problem and learn the steps to break it down to solve it.