Welcome to SR. You've taken a very important first step by coming here to read, learn and share. It's an important first step towards offering yourself some of the same care that you so freely give to others.
In addition to reading posts, please check out the Sticky Threads. A good book to start off with is Codependent No More by Melody Beatty. Al-Anon offers some wonderful support for people who are affected by someone elses drinking.