Drew, if you are not living in one of the larger, more enlightened cities with lots of resources--or if you are in one of the less trans-friendly states--you can start a thread in which you specify your state or city in the subject line and ask whether anyone knows of good resources. We have members from all over at this site, and someone is likely to be able to advise you about an informed consent clinic, trans-friendly doctor, or LGBT center with trans resources.
You also have Google, and Susan's Place has directories (so do some other trans sites). In addition, if you have health insurance, some policies (admittedly, not many) are fairly liberal about covering trans health, although you might have to dig up doctors on your own. Finally, if you are in college, you can often get help and references through the school.