Benjamin - no need to worry about crying at a meeting or talking about yourself - many of us have cried many times at many meetings. You don't need to talk, either - just say 'I'll pass' - it is more important to 'seek identification' and listen to others than it is to talk, certainly at your first few meetings. You will be made to feel welcome, which was a bit of a revelation for me as I didn't really feel welcome anywhere when I first went along.
Don't let your reservations and fears hold you back from getting the help you need.