What do you suggest I do if I want to attend but I've never been out in public before?
You will be welcome to participate either as "brother" or "sister" (or both) depending on your preference.
If you wish, you will be free to transition from one mode to the other at a time that will be primarily determined by your own comfort level. You might plan your big "coming out" to be at a time such as an evening at a club that is known to be T-friendly. Several of those attending will be willing to help you as needed, and will give you feedback as to what you should do, and what may or may not be appropriate.
Play it by ear. You will know when you're ready to appear in public.
Next FAQ entry (9.04): I don't know anybody else who's going. I feel a bit uneasy.