I recently started taking classes on Krav Maga three times a week and find myself really, really enjoying it. To the point that I want to start getting more active (I'm your typical computer nerd). I've been trying to cut back on food intake, but I need a more rigid diet that I can point to and limit me. I would like to lose some weight (I'm 215lbs and 6'1") and build muscle. I would like to get a gym membership but have no idea where to begin or what I would do there really. Basically what can I do? Any help or pointers are appreciated and any links to any sites will be read. EDIT: I guess I should add I'm 19.