Watch some UFC videos or read some martial art books at the library. To be honest I would avoid a confrontation if at all possible. You are going to do anyone any good in prison and you need a clean record for the future. Just keep in mind that your actions could come back to haunt you if you want high level security clearance in the military or government later on or if you want to become a cop or some other civil service job. Concentrate on making money and gaining power as much as possible......if he does attack you however......beat the living sh*t out of him.