if you looking to gain bulk that is muscle and not fat....take my advice, and it is the advice that alot of personal trainers and alot of guys in the gym give me....do one, just one cycle of roids, you will gain 30 pounds by the time the cycle ends, you will lose alittle when you come off but you keep around 15-20 pounds MUSCLE.
and for all of you about to say nooo noo...do not do roids....listen very closely, i have been working as a personal trainer at la fitness for 5 years,and i talk to alot of guys and i know for a fact that one cycle of roids will not hurt you or mess with your testosterone at all later in life......now if you go beyond one cycle that is different!

oh ya also the main way to gain bulk is to flood your body with protein...take 4-5 protein shakes daily, the pounds will come and since it is proteins, it will not be fat, you must stick to working out 5 times a week!