Welcome. Comming here is a great start for yourself!!! Sounds like your boyfriend/ soon to be husband is taking the first steps for his recovery and for him to want it for himself is huge. Reading and understanding the disease will help you. Have you looked into Al-anon or Na-anon? Both are based on the 12 steps of AA. Going to the AA meeting with him was great and I hope you benifited from it as well as your A.
On the Na-anon board the steps explained is posted and I myself have found it helpful.
I hope you keep comming back