The position of the ball in your stance is determined by your swing shape and the club you are hitting. Your wedge should be near the center of your stance and your driver should be off your front heel.
Take swings trying to just hum while keeping the tempo and volume of the hum constant
Grip the club in your fingers, have your thumbs and index fingers pinched together to support the club at the top of your backswing and apply your grip pressure at a medium level