Everybody wants to go to heaven but nobody wants to die.
To be an effective tennis player one first must find and hire the right tennis pro. The player must take at least one lesson per week and practice with a partner.
The aspiring player must remain with this pro long enough to learn what he or she knows and applies about this great game of tennis. Clinics with this same pro are necessary so that one has OJT with guided practice.
Never take lessons from a pro who wasn’t a highly ranked player. To say one teaches and does not play is like being a chef and choosing to be fed with a feeding tube.
Take a look at the tennis forehand video.