I started karate in 1990 with Hanshi Lou Angel. I currently still workout with him and have his permission to offer these books to the public. I am offering these books to help the Tenshi Goju Kai system grow. I hope you find them of assistance to you. I hope if you are not a Tenshi practitioner, that you will take a look at the Bunkai section of the books. If you study any Goju system you will find the bunkai very helpful in your journey of self defense.