i can sum up your question in a few words. "the money you will earn in the cow industry is the money you don't spend".
sorry re read your post and have a better answer. build a pen with water tank and room for a few head. maybe .5 acre or so. go to okc west of tulsa or the local salebarn and buy a steer or bull calf about 600 lbs or more. bring home put in pen and feed some medium quality hay with some alfalfa flake or two or protien. a little corn until about 1200 lbs and haul to the butcher. watch the poop and keep it looking about like a pumpkin pie and not runny or hard turds and you will be ok. if the turds start to stack up add protien or alfalfa gradually until it loosens up and keep it there. figure about 3 lbs per day gain.