This book covers all the basic techniques of a wide range of martial arts. It is not a manual on Brazilian Jiu jitsu but does include some fundamental techniques.It is not a manual for cage fighting or mix martial arts competition. It is an over view of Hapkido (and I would say traditional Japanese Jiu jitsu).It has a good deal of stand up grappling that is missing in most arts so I found it very useful in that respect. Throws, joint locks, leg locks, arm bars, weapons, etc. are covered in detail.This is a must have for martial artists of all backgrounds, you won't regret it!