I used this book at college after many years of not doing any math. I was very worried at first because math was not my strong point in school. I was in the tutoring lab for the first few weeks, then I got the hang of it. This book was great for me. I was way ahead of the class and studying chapters not even on the test. I was doing all the odd problems, review questions, and tests since the answers were in the back of the book. These were the days where most of the problems I could do fast and in my head. I used if for two non-credit math class.