Learning the windmill pitching motion is a slow process. There are no instant results and no shortcuts. Using my 'Quadrants of the Circle' teaching method, it will take between 6-8 weeks for a beginner to learn the full circle and actually pitch with any consistancy. The process includes the introduction of the 'Quadrants of the Circle' along with the fundamentals of each quadrant.
Every class builds upon the previous class until the pitcher is making the full motion.
For those with pitching experience, the process will be similar, but will likely move at a quicker pace. That does not mean it will be that long before the student can pitch. A beginning pitcher will be capable of pitching in a game after about 2-4 months of lessons. I have broken the windmill motion down to four quarters of the full turn of the arm. Each quarter turn has many specific fundamentals to be learned such as location of the arm, thumb, shoulders, hips etc.