Work one body part once a week and hit it hard for maximum results. Don't fall into the 29 pump chump mentality of loading up a bar with 5 lbs on each side, and thinking 50 reps will make you as ripped as Brad Pitt in fight club. The vascularity all comes from cardio and diet. Diet is 90% of the key. Also be advised that you won't be able to bulk and stay lean at the same time. That is why all bodybuilders go through a two season training regimen, one for bulking and building muscle, then a cutting phase to shed the fat and keep as much muscle that they gained as possible. Personally I'm only good at th bulking, I love food, who doesn't?