you can get in shape very easily by just hitting the heavybag, i usually play some music that gets you in the mood and just hit the damn thing for an hour or so with little breaks inbetween. use your buttfly and treadmeal machine before and after your workouts, use it as your warm up. Not much is needed to get in shape. Watch boxing, try to copy punches on your heavybag, and after awhile, things will come more and more natural too you. You wont be perfect since you never had pro training but you will be better than other guys on the street with no training at all.