What is Spin Rate?
Spin rate insert (backspin, not forward spin) has a major influence on the height and distance of a shot.
Spin is created through your clubhead speed and spin loft (direction clubhead is moving and the face orientation at the point of impact).

6 FACTORS THAT AFFECT SPIN

Spin Loft
Clubhead Speed
Impact Position
Club Design
Ball Design
Friction
More about these factors inside the POWER TECHNIQUE section. The important factor is understanding that your equipment and ball play a significant role in optimizing spin. Getting fitted by a professional clubfitter is your first critical step. Club Champion and True Spec Golf are my top picks. Google them. They are everywhere.