Hey Rookie--Welcome to SR. Try not to beat yourself up too much for slipping up last night. It happens. Just get back up and get in to recovery. It's good that you went to an AA meeting this morning. Is there another one you could go to tonite? I have seen the most success from people who go to at least one meeting a day for the first three months or so. I know it seems like a lot, but if you compare it to the time you spent thinking about drinking, drinking, and recovering from drinking, it doesn't seem so bad. Also, as you said, you need to introduce yourself in a meeting and ask for help. Perhaps you could go early one time and find someone before the meeting to give you moral support (that way you will have approached at least one person before you address the whole group.) All the people in those meetings are going to want to do is to help you. And by helping you, they also help themselves.
Hang in there and keep posting.
Hugs--