If you really want to learn about bodyweight training and exercises read the 2 books listed below:
Convict Conditioning: How to Bust Free of All Weakness–Using the Lost Secrets of Supreme Survival Strength
Convict Conditioning 2: Advanced Prison Training Tactics for Muscle Gain, Fat Loss, and Bulletproof Joints
You will learn more information about bodyweight training from these books than anything else out there. I hope this helps!