My favorite is “Easy Strength”.
It’s a collaboration with Pavel Tsatsouline.
The main idea of the book is increasing Strength in athletes who already train in a main sport.
They can’t afford fatigue that may impair their specific sports training, and they can’t afford too much time either.
“We are runners that lift, not lifters that run” as an analogy.
It also includes the Mass Made Simple program, albeit summarized.
The other books he has are more geared towards coaching others and training philosophy.
Easy Strength is more practical for personal application in your own training.