I have been training in the martial arts now for over 52 years. I am the founder of Sekai-Ryu Ju-Jutsu. My first book, Ju-Jutsu...Art of the Gentle Heart sold 40,000 copies in just 3 weeks. 4 other books are soon to be out on bubok.com. my first book can be bought from amazon.com. Glad to be a member of the family.