Mastering the 21 immutable principles of brazilian jiu-jitsu: the ultimate handbook for brazilian jiu-jitsu students - Teresa De La Cruz

On Mastering The 21 Immutable Principles Of Brazilian Jiu-Jitsu, Paulo Guillobel wears a hat of a scholar and proves that, in more than 26 years of practicing, he has not only trained, taught and competed at high level, but most important of all, has studied the art thoroughly.

Every student, teacher and master will surely take advantage of the knowledge carefully organized in this book.

This is by far the best Jiu-Jitsu book I ever read.