I have been lurking here for a few days now and I have to say that there is a wonderful volume of information here.
I am currently 6'3" and 158lbs. I have just started working out and I hope to put on about 30lbs of muscle to fill out my figure. I am one of those perpetually skinny guys that eat everything and never gain any fat... I have been tested to have less than 4% body fat. Anyhow, I have been working out for about a week now and I am feeling better and having even more energy every day. I am consuming about 3500 calories a day (with plenty of protein AND veggies... my wife is a vegetarian) and I am trying to stick to lifting 5 days a week to put on muscle as fast as possible.
Wish me luck!