Hi - I am Stew Smith and you are now shopping at Military.com's Fitness eBook Store. As the author of the eBooks, I am also the customer service should you have any problem downloading or understanding the exercises. Feel free to contact me on any of the programs prior to purchasing as well. I will return your call or email as soon as possible. I know fitness is challenging at all levels but I can help you find what will work for you, your lifestyle, your goals, and for your health...Good luck in your fitness journey! Stew Smith Military.com Fitness Stew Smith c/o Military.com Dept PO Box 122 Severna Park, MD 21146 410-544-0059 getfitstew@aol.com getfitstew@aol.com If you are unhappy with your order, please email me and I will either make your order more suitable to you or refund your money. Stew Smith