At 11 stone and 5"9 you have a long long way to go before you even think about touching gear. Yes ern has given his side but you really need to think about what your doing. Even though I don't disagree with gear or using it I dont like to see lads do it the wrong way for the wrong reasons, Blindly.

Go train for a while, good diet, rest and cardio, enjoy the gym before you have to start akin it all to seriously. Taking just gear WILL NOT make you muscly, strong or anything. The only thing it might do is mess up your bloods, cause you to get a fat chin, gyno and mood swings.

Like ern said research alot.