I spent many years doing martial arts. Any martial art where you kick and spar you'll sprain your ankle with some regularity. If you have a minor fracture and the pain isn't too bad, the treatment is pretty similar to that of a sprain . . . it just will take longer to be fully recovered.
Immediately after you sprain the ankle you want to apply compression on the ankle, occasionally ice it through the day, and elevate it. The bulk of the damage that happens from a sprain is from the swelling. Reduce the swelling, and you can speed recovery time. You also want to stay off it for a day or two. After a day or two you want to keep your ankle compressed with a tensor bandage or something, and start very slowly applying a small amount of weight to the ankle. You don't want to feel any sharp pain when doing this, if you do . . . stop. Once you can stand on both legs comfortably without pain, then you start doing gentle stretches to regain range of motion. Extreme stretching will make things worse. You should be experimenting with strengthening exercises at this point like balancing on one foot, and doing heel raises, that sort of thing. You shouldn't feel any sharp pain when doing these.
Most people stay off their ankle for far too long, then start using their ankle too hard when they come back. This almost guarantees that you will sprain and re-sprain the ankle, making it almost a chronic problem. Properly rehabbed you should be back to full strength after about two to three weeks depending on how bad the sprain was. Once you get back to full strength, doing a few exercises daily like skipping (boxing style, two bounces on one foot then two bounces on the other food), single leg balance work, and heavy weighted calf raises with a barbell will help reduce the incidence of sprains in the future.