WHAT! at 5'8 and 136 lbs you do NOT need steroids. if you don't know how to eat properly you are going to waste your time and money. because when you come off steroids you STILL won't know how to eat and you will lose whatever muscle you gained.
before you start using you need to post up your DIET and TRAINING routine, so that we can critique it and see if there are other options out there for you before using steroids.