Here goes my first,
Its important for you to build a solid foundation first. You want to be able to reach your full potential naturally, this could take between 3 to 5 years. Start with full body workouts about 3 times a week using basic compound movements. Make sure your getting enough quality protein and calories, and enough rest.
If your serious and consistent with your training and diet, then perhaps you my want to think about steroids. If you do take that route, make sure you do as much research as possible. Asking questions on a forum is NOT proper research! Being spoon fed information is not the proper way to learn!
If your just going to train on and off, a few months here and there, steroids should not be an option.