There are competent gender therapists in most areas, and even some online. That might be a good place to start.
For me, I made contact with the local transgender community through support groups and other organizations. A good piece of advice I got early on was to try going out as my identified gender and see how it felt. I got a lot of tips from this site on how to do that.
I also opened a blog on this site. That really helped me sort out my feelings and attract friends who were in a similar place to mine.
One thing I can say, it that, transgender feelings very rarely go away. Often they come back with a vengeance and most people are glad when they finally deal with them.
Good luck. I hope this helps.