One of the most misunderstood topics in the golf swing is the hands.  I read a lot of materials that say you want to try and reduce how much you rely on your hands and how you time the golf club in your swing with your hands.  But this isn't possible if you don't get them to do the right things.  You can't get your hands to do the right things if you don't understand what they are supposed to be doing.  This video starts to explain how you influence the golf club with your hands.