Welcome Ethical and congrats on your newfound sobriety.
We do have a forum here specific to 12 step programs if you have specific questions you may want to c heck that out.
Regarding your question about sharing, I think perhaps you are making things a lot more complex than they need to be. If someone is breaking anonymity of things happening at meetings make sure to inform the meeting organizer and/or your sponsor. Regarding sharing, you only need to share what you feel comfortable sharing. If you feel pressured I'd talk with your sponsor or perhaps even find a different meeting to attend.