Hitting: Where should I try to hit the ball?
Always approach the inside & top part of the baseball. This will help keep your bat on the correct swing plane and help you hit the baseball where it is supposed to be hit. If it's inside you'll pull the baseball, and if it's away, you'll hit the baseball to the opposite field.
With this approach, you'll hit a lot more line drives and ground balls - instead of line drives and fly balls. If your focus is to try to hit homeruns you will contact the bottom of the ball and hit a lot of pop ups and fly balls.
Important! Make sure when you make contact that you have your top hand palm facing the sky! Remember "Palm up, Palm down." This ensures you are maintaining a level swing which will produce more line drives and hard ground balls.