There's nothing like standing over the ball on the first tee and hitting a drive that whistles 285 to 290 yards down the fairway while staying in the center cut. Not only do you feel great about hitting a near-perfect shot, you get looks of admiration from your playing partners. However, as good as that feels, it's quite painful when you slice your next tee shot 40 yards off course. Consistency, not hitting awe-inspiring drives, should be your goal when you go to the tee.
Stand with your feet a shoulder-length apart when you address the ball. Take an athletic position by flexing your knees when you stand over the ball. One of the keys to a good golf swing is being able to transfer your weight from your backside to your front. The way to affect this is to bend your knees.
Place the ball about one ball length closer to your front foot than your back foot. The driver has less loft than any other club in your bag and many golfers have a hard time getting their ball up in the air because of it. You can overcome the 3 to 6 degrees of loft by teeing the ball closer to your front foot because you catch the ball on the upswing when you hit it.
Choke down on the club by about an inch from the top of the grip. This would seem to defeat the purpose of using a longer club, such as a driver, because the length of the club tends to give the golfer more club head speed at impact and that's the key to getting distance on your shot. However, when you choke down on the club, you get more control of the ball and the loss of distance is not significant. This is the school of thought endorsed by professional Anthony Kim.
Drive through the ball with your hips. The golf swing is not just about your arms and hands. The key to getting your swing started is your hips. In order to hit a consistently productive drive, you must lead with your hips. Your hands will not come through the ball until your hips have gotten through the hitting zone.
Snap your right wrist on impact with the ball to get the extra distance that you need. Your left arm and hand makes sure you hit the ball accurately, but it is your right wrist that provides the extra pop in your shot. As you make contact, snap that right wrist with authority to make sure you get maximum distance. This is not "swinging hard" or recklessly. Instead, it is maximizing your ability to hit the ball for significant distance.