Question on Driving:

For a driver you want to make sure that you catch the ball after the bottom of the arc when you are on the upswing. This will help the ball launch and achieve maximum distance. Many instructors teach to play the ball at your left instep. Because stance widths vary from player to player you have to be careful with that. In other words, if you have an extremely wide stance, playing the ball at your left instep will result in the ball being played completely outside your body. When you play it that far forward you will actually catch it too much on the upswing and probably outside in unless you are a highly skilled player. I find playing the ball anywhere from the logo on your shirt to your left armpit is a better gauge.

Which place is better depends on what's going on in your swing and what your angle of attack is like. A player that releases early would have better luck playing the ball at the logo and a player with more lag would have better results playing it further forward. Another tip for set up with a driver is to make sure to have a bit more weight on your back foot at address.