Thats kind of a broad question. Just set up a lage mixed reef tank(200+) and a frag tank. Buy a ton of frags and grow them into large colonies(1-2yrs). Frag your large colonies from time to time and place the frags in your frag tank. Raise the frags into sellable size pieces and sell away. Get your every day pieces and get several rare and exotic pieces. Don't have insane prices either or your not gonna sell anything.