This book was a requirement for class, and one that the whole class (including the instructor) found to be a waste of time. It is VERY unorganized, and the questions at the end of each chapter are misleading. I read chapter 10 at least 5 times, and still couldn't answer most of the questions. Luckily when I got to class I realized that no one else could either. Hopefully in the future the professor will look into another book that promotes learning.