The official textbook for candidates pursuing ACTION Personal Trainer Certification (www.actioncertification.org). Over 300 pages covering Exercise Science, Biomechanics, Client Assessment, Program Design, Special Populations, Nutrition, Starting your Business and Legal Issues.
Read this. Watched videos. Passed the exam. So you know, mission accomplished. That said, it would not be difficult to write a more compelling personal training book. This one is essentially a machine gun of facts, which makes for unpleasant reading and retention.