Jiu-Jitsu for Beginners: An Illustrated Introduction to the World's Hottest Martial Arts Discipline
David Walkeris the former director of the Jitsu Foundation, one of the largest jiu-jitsu organizations in the U.K. Still an active member of the Foundation, David holds the fighting grade of "sandan," the highest attainable within the Jitsu Foundation, and the highest teaching grade of "tertiary fellow."