I think most of our transgirls are older, but we've got a few transmen here who came out and/or started transition in their teens. At any rate they got the ball rolling and they're getting closer to achieving their goals, so it can be done.
How old are you? I'm 17 and I'm waiting another year to come out, for a few reasons:
1. I've only been having real serious gender issues for about a year, and I want to be sure this is what I want before I "out myself".
2. This time next year, I'll be at college in New York. I will be more in control of my life, and that includes transition.
3. Again, I'll be at college. And that means living away from home. It just isn't an option for me to transition while I live at home. My dad would make my life hell.
You're gonna need a therapist to get hormones. It's dangerous to do anything else.
Anyway, welcome, I hope you find some answers here. Good luck.