no you are sadly mistaken..steroids are NOT magic beans that will blow you up..you need a solid foundation, which you do not yet have at 150lbs..you have plenty of room left to grow naturally..diet and training are way more important than taking steroids..you need to eat to grow..if you dont eat, you will not grow on steroids either, nor will you keep what gains you get too
this is an example of a bulking diet..this is how you should start eating
http://forums.steroid.com/showthread.php?t=113010