Boxing
To start learning boxing call the local gyms and see if they offer training in boxing. If you do the
training through a boxing gym they will get you prepared for the ring.
Most gyms that specialize in boxing will also have agreements with
other gyms and promotions. They will set up boxing events where boxers
from one gym will fight against boxers from other gyms.
The training will include workouts , so that you can start training for boxing faster. A gym will make you register with the United States Amateur
Boxing Federation (USABF) before you even step into the ring. This
membership will cover you in case you do get injured.