The entire thing in general? Or just how to get trained or what. I'll try as best as I can. When you have enough posts, you can get an element, and when you have an element, you can get trained in it by a sensei. Though many people do friendly training these days since we have a small amount of senseis and some don't even teach anymore. Then you can fight using techniques, its all a role play, its just your imagination. Though you do have hitpoints and chakra points.