If you've only been training for 2 months, you don't need to worry too much about supps right now(no matter what those little runts at GNC tell you). Get a multi-vitamin and fill a truck with protein powder. When you hit a little plateau after a while, try creatine. Then after learning about them, try things like glutamine, ALA, etc. For now, your body will react surprisingly well to simply eating a lot of food, training hard, and sleeping all the time. Take advantage of it now, because it only gets tougher.