Taking a plan that worked for Red Auerbach's Boston Celtics will likely not work for the 12 and under Hipsters AAU program, or Basketball Club Anderlach in Europe. Fitting your season plan into your situation is what you are paid for and a critical part of being a successful coach. After you have established your overall team philosophy and addressed these issues above you should proceed to develop both your team and individual play philosophies on offense and defense. Here is a brief example of what I used in a previous year coaching professionally in Europe. It must have a common purpose accepted and executed by all players.
Defense is the KEY to success, and pressure defense generates an aggressive and fast tempo game.
It takes an all-out physical and mental effort to play pressure defense, but playing this way will lead to many easy baskets on the offensive end of the floor. Jump in the direction of the pass, on every pass. Play help defense on the weakside of the floor. We will front the post in all situations with weakside help on the lob pass. We will challenge hard every single shot.