As a personal trainer, I found it hard to get my point across to people sometimes. I would try and explain how to do an exercise, or it for them, and even help move them through the motion. Sometimes a client just wouldn't get it. And sometimes it's easier for me to know what a certain exercise is doing for the body, but it's hard for me to explain it in terms everyone can understand.
One day a client brought this book to me and I instantly loved it. I went out a week later and bought it, finding no other book that came close to the amount of great info this one has. I used it for myself to vary up my own workouts, and also for extra support for my clients.
This book does a great job explaining ideas and exercises in terms everyone can understand. It is technical, but in a way that you don't have to know Latin or have taken college anatomy to understand it.
When it comes to specific exercises, it explains how to do them, what muscle it works, recommendations on how many to do, and shows a photo of a person in the starting and ending positions of the exercise. It takes you through a 12-week plan for burning fat, but I used this book mainly for the diagrams and variety of exercises it shows.