I bought DVD's and a couple of Alain Burrese's books on martial arts training and they were terrible! They were over-priced but I thought that maybe they would be worth it. Boy was I wrong! This stuff was white belt level teaching taught by someone with questionable credentials and a questionable background. I was extremely disappointed in these products and decided to do some background checking on Alain Burrese. What I found out shocked me. He is notorious in the martial arts industry. There are questions on his actual martial arts ranking and whether or not he actually bought his black belts in Korea instead of earning them. There are also inconsistencies in his military claims. He seems to change his resume when someone questions some of his claims. BEWARE of buying any products from Aiki Productions. These products are also on Amazon. They are not worth the money and the author of these products is questionable at best!