iPhone app http://itunes.apple.com/us/app/golf/id456035227
http://www.4golfonline.com Improve your golf and learn to shape the golf ball. Hit a draw shot with Mark Crossfield in this simple to understand golf instruction. Learn to control your swing path and understand your club face control to hit a shaped golf shot into the green. Play better golf with Mark Crossfield’s simple to use and understand golf drills.