It is not recommended that you go to the amateur class of the sports school to practice boxing, not to mention the problem of charging. There are no good boxing coaches in general sports schools. At the beginning, it was all physical training, teaching some basic movements, such as straight fist, jab, hook, swing, ... standing on the boxing pile, skipping rope and so on. And it's good to be able to play sandbags. Get ready ... advice from friends who have the same experience as you.