everyone else is putting in their 2 cents, heres mine.

I'm about 6'2 and started working out in march. I was about 170ish, needed to gain weight. I joined a gym, worked out 3 days a week for about an hour for a month, got no results, besides a little more toned. I went to GNC, bought whey protein and a product from BSN, NOexplode. Its a powder, mix with water, drink it, then wait 20 minutes and you have crazy power. after about two months, I was up to 195, but mostly muscle, the rest was my *lower extremities* if you will.

that was my 2 cents, that helped me. But everyone will respond differently to working out and taking supplements. Another really good product is the muscle milk someone said. Just make sure whatever you decide to do, take multivitamins and drink a LOT of water. I was drinking a gallon or more a day. I had to piss a lot, but its good for you