Welcome,
There is a lot of helpful information on these boards, and some great support. Personally, though, I think face-to-face support is the MOST helpful. It sounds as if you are feeling very alone and isolated right now, and just getting around PEOPLE who understand what you are going through is a big relief.
I wouldn't worry too much about running into folks you know. People in AA (and, I would assume, NA) are VERY conscientious about protecting each other's anonymity. It feels a little odd the first couple of times it happens (it's happened for me a handful of times), but it was always fine.
Good for you for looking at your problem head-on and taking the first steps to dealing with it.