i did every single mistake with roids until im 16
and familiar with them for long long time.
Usually, people tells you to don't use it before after 25.. This is because your endocrine system builds up until 25 (at least according WHO)
So it definitely good way to hurt yourself to using them before 25. You can find out whys at 35..
But when people tell you to don't use before 25, please don't understand this as "you can you after 25"
this is not it.
I'm big supporter of roids. But i can say that, there must be another path you should walk between age 25 to achieve your limits before using them.
I don't know it's long or short. But one thing you don't want is not wasting the chance of using roids first time.. So make sure you reach that point.
This is right way to do it.