Welcome to our recovery community....
There are different types of AA meetings
Please read this link for information
Your First AA Meeting<
You mention you are shy. In that case....you might
want to ask a friend to accompany you.
You will not be expected to stand up or speak
if called on....."I'm here to listen but thanks" is
the way to handle the invitation.
Please do go...and come back with your experience
Many of us are winning over alcohol....so can you.