Hi Temperance,
A therapist will help you figure out where you are on the gender spectrum and what; if anything, you need to do. It's mainly just talking and occasionally addressing points that come up during the conversation. The key is to be honest. You want the path that is right for you and that is not necessarily the path you currently think is the right one.
After some time in therapy, if you determine that you are indeed transgendered, you will need to go to an endocrinologist to start hormone replacement therapy. In your case, it would be estrogen plus an anti-androgen. This starts the feminization process which includes your body and your mind. At some point, you will start cross dressing and ultimately, start living as a woman. Somewhere in there comes electrolysis/laser to remove hair. Then comes the surgery or surgeries and finally, life as a woman.
The journey is long, expensive and emotionally difficult. I can be nasty hard and can take several years. For those of us that really are women on the inside, it is very rewarding. For me, it is the only path.
So, come on in and wonder around, learn and ask questions. We are here to give and receive both help and support.
Hugs,
Jen