Many of us have been in your position, undertheivy
For me personally, it's hands-down the best thing I've ever done! People will no doubt greet you with warmth and kindness; one thing I will often mention to people going to a meeting for the first time (when I'm there and chatting face-to-face) is that it can be overwhelming and one of the many reasons other alkies are drawn to a newcomer is that they're excited to pass on the message and share what has saved their lives/my life, but it *can* be a little daunting. My experience was that I allowed myself to feel bombarded and intimidated by people who only wanted the best for me. Just remember you don't have to take everything that everyone says on board, because It's easy to feel overloaded with info, in spite of many people's good intentions.
I think calling AA and having someone accompany you to the meeting is a great idea
I didn't realise that was an option when I was new around!
Xx