Picking the right club for each shot is an art. Unfortunately you must practise with each club to learn how it reacts. There are no short cuts that I can help you with. You must discover each club´s characteristics so that you can feel the difference.
Try the following practice routines:
1. Hit your 6, 7, 8, 9, pitching wedge and sand wedge using the same length and pace of shot without aiming at a flag. You will notice how much more roll you get with the 6 iron compared to a sand wedge
2. Pick a target and use each of the clubs to play a shot to the same hole. You will start to discover that some clubs are more suitable than others
Go to the Games section to learn more about picking the right club for each situation.