Hey. I'm 20 years old 6' 165 pounds and I look like a rail. I'm in the military around a lot of guys twice my size and I'm tired of getting punked. I want to gain as much mass and strength as I can in the next eight months(I'll be deployed and have PLENTY of time for the gym). I'm not a stranger to the gym but I'm not an exercise guru(I run and lift low weight high reps about twice a week) I'm also not great with diet/supplements. I am not opposed to doing anything that will make me bigger as quickly and efficiently as possible. I also want to keep my gains. Any advice?

Drive and motivation are no problem. I'm tired of being regaurded as a tiny little *****. I just don't know where to start or where to go once I've started.