Skinny = Weak. You might be strong for a skinny guy, but you're still not strong. If you want to add strength and mass, eat anything in sight. Don't be a picky health food only nerd or you'll end up... skinny. You can lift weights more effectively and efficiently than Arnold, but if you don't eat a ton you'll still be.... skinny. Eat like it's your job, then when you get to about 205, start cutting. Still lift heavy, but cut the sugar and carbs out, pick up some cardio, and you'll be a beast. It is easy when you put your mind to it.