The grip you use to serve with will dictate your entire swing. Large numbers of club players tend to use a forehand grip to serve with, which causes many problems as they progress and want more power and spins on their serve.
The majority of pro players use the continental grip to serve with and the pros who don’t use an exact continental grip will use some sort of variation of it. The continental grip is also known as the chopper grip. This is the same grip we use to hit slices, both the forehand and backhand volleys and the overhead smash. This grip allows you to impart both power and spin on the serve. If you use a forehand grip to serve with, you might be able to get lots of power because the grip allows you to hit the ball very flat, however your consistency and accuracy will suffer greatly and generating spins will be very hard, if not impossible. As you will learn later in this PDF, supination and pronation on the serve will help you generate extra control, power and spins and this action is only able to occur if we’re using the continental grip.