Help!!

Im 23 years old, 6'1 , 247, big mamma jamma of a man, my diet is horrible, I was going to the gym, doing 30 minutes on treadmill and mild workout sessions, then 20 minutes in sauna, they say u lose a lot of calories in the sauna.  My life long dream, please dont laugh was to go to OVW, Ohio Valley Wrestling school, I want to lose the fat but get looking awesome, I know first is to change diet, but I dont know where to begin with just losing fat, I have a massive belly, I have the desire , I just need pointers, ie: How much cardio, and so on, do I drink fat burning shakes, protein shakes, like what?  Just get me in the direction and waam great results will happen, please help!!
 
Mike

This will have nearly everything you need to know
http://www.discussbodybuilding.com/For_Losing_Fat/m_111175/tm.htm