5'11" and 150 lbs. i started out like you. i think a lot of us did. texaslifter on this forums i think had your exact height and weight when he started out. ditch doing the standard workouts. for your size (or lack thereof) you need to do a 5x5 workout. compound lifts are the best for putting on mass, and the 5x5 will challenge you as well as increase the weights you use on every major lift - an increase of weights = more muscle. look at
http://anabolicminds.com/forum/training-forum/86088-neoborn-s-where.html under his 5x5 link. there's also some good information in there.
you need to eat a lot more than you are. this is fairly easy to do, and i've made a semi helpful link for that. you also need to eat the right kinds of food. add a pre and post workout shake with:
1 scoop of peanut butter
1/2 cup steel cut raw oats
25g of whey protein
these are the only supplements you really need, though creatine will probably help. for that, pick a brand that you like - controlled labs seems to have some great products, with a lot of good feedback. honestly i wouldn't bother with any other supplements at your size - save it for when you hit 175.
stay away from prohormones at your size. they're great for breaking a plateau, or adding muscle when you've reached your genetic potential, but if you don't try to get to your genetic potential, you won't have the diet or intensity to keep those gains during PCT when your test levels have crashed.
eat more, do the 5x5 for 3 months, then make your own total body workout that applies best to you. you've got so much room to grow brotha. also, you can add upright rows to the 5x5 workout plan twice a week to help increase your shoulder girdle width.
http://anabolicminds.com/forum/training-forum/99607-gaining-mass-nutshell.html