Welcome to SETPRO's E-Book store. Descriptions of all E-Books can be found on the SETPRO.COM E-Book Information Page. Discounts for multiple e-book purchases (2) 25%, (3) 30%, (4) 35%,(5) 40% and (6) or more 50%. Free video analysis when you purchase (3) or more E-Books. Thank you. Paul Nyman