The rules determine the development of the game in every sport because they put a limit to what you can do and what not. The aims of the research were to determine the order of importance of the basic basketball rules as well as the technical and tactical contents deriving from these rules. The method used for the data collection was that of the nominal group technique. The nominal group consisted of seven experts who fulfilled the minimum conditions. Regarding the first question, the order of importance of the rules was: steps, double dribble, lines, fouls, referee, rules regarding time limits and score. With regard to the technical and tactical contents deriving from the most important rules, for example, through the steps’ rules, players can learn starts, stops, lay-up, etc. These data allow organizing a program based on the rules.