First of all welcome to the board.

With very little training experience the majority of the guys here including myself would recommend not taking any steroids at the moment until you have a decent amount of experience in the weightroom. I take the point you have a high metabolism so maybe you should increase your intake of food or change what your taking in.

my advise to you would be to visit the workout and diet section, build your knowledge and experience then further down the line consider aas