Lara, if you want to educate yourself, here are my suggestions:
Under the Influence: A Guide to the Myths and Realities of Alcoholism by James Robert Milam & Katherine Ketcham
Addictive Thinking by Abraham Twerski
Boundaries by Cloud & Townsend
Codependent No More by Melody Beattie
Also, chapter 5 of The Cocaine Recovery Book by Paul Earley, found here:
Downloads | Books
I also strongly suggest Al-Anon and/or Nar-Anon