I would recommend you do some hard research. Before you start pining and doing any cycles..
Your way to young IMHO. But if you must I would start out with a test cycle only.....
till you fully understand what you are doing ...
What are you trying to achieve.. loose weight ,gain mass , what. You are 16,, you and your body haven't even fully grown...
Or are you just going to take a magic pill and over night look like Arnold...
I am going to do you a big one ...go buy the book ANABOLIC. By WILLIAM LLEWELLYN...
Read it like your life depends on it ...like it was your bible..
You will need a good doctor also . For blood test.... a lot of these components cause your cholesterol. To go crazy even cause heart attacks.. IS YOU GEAR REAL, DO YOU TRUST YOUR SOURCE,,,ASK YOUR SELF
Study ,, have a plan. ,,,have a doctor you can trust...study study study, and have a plan ...
DON'T BE A DUMB ASS..