How do I improve my tennis forehand and backhand?
The key to the faster forehand, backhand is a faster swing speed with a looser grip but power is important as it also contributes to the speed (making it bounce with more power and speed off the ground when the ball land). To make this, u can train your rotator cuff muscle (internal, external, raised internal and raised external rotation exercises for rotator cuff muscle; you can google it out for more explanation or video); and build your whole body stamina, and master the correct idea of weight transfer from jumping to turning your body and rotating your shoulder to hit serve. That's for the speed of the shot.
To make your ball bounce higher, for forehand you can hit it with a semi-western forehand grip (which most pro are using now) or the more extreme and tougher one - the western forehand grip (like what Nadal uses; you notice his shots always have very high bounces) to generate more spin so that your ball bounces higher, also remember to hit the ball from the position slightly lower than the height where the ball bounces and swing (to hit) the ball up with a follow though that ends at higher position above your shoulder.
For backhand of a right hander, you can use eastern one-handed backhand grip or even more extreme one of the semi-western one-handed backhand grip to generate more spin for the bounce, also not to forget to hit the ball from the position slightly lower than the height where the ball bounces and swing (to hit) the ball up with a follow though that ends at higher position above your shoulder. For a righty two-hander, u can use semi-western or western forehand grip of a lefty for your left hand while holding your another dominant right hand at the lower shaft (better with continental grip) to generate more spin. If u are a lefty, just use the grip otherwise.
Practice makes perfect!
Tennis Lessons: How to Hit a Tennis Backhand, Topspin and Slice
