first you wanna make up your mind which type of physique it is that you're looking for.
are you looking for the physique of true adonis? or maybe alexxx? or 240 ? or vince?
after that we can get more specific
Or, maybe... Slim (Frank Zane/Swimmer's body), Moderate (Dexter Jackson/Victor Martinez), or Huge (Ronnie Coleman/Markus Ruhl).
As for BBing laws, I really can't think of any! Um... for training, I think the law is to find a program suitable for your goals (by gaining advice from books) and stick to it for 2 months. Change it up where neccessary after that, and keep trialing things. For any program, you need nutrition aswell, trust me! Let's say 30g protein + 50g carbs + 10g fat per meal, or thereabouts. All depends on your goal.