Hi number one and welcome to SR.
The have been several recommendations for Alanon and I am going to jump on board there as someone who attends Alanon. It has been a great help for teaching me how do to deal with the issues I have from living for a long time with an alcoholic.
In addition there is a friends and family section here at SR that focuses on the types of things you are looking at.
Friends and Family of Alcoholics - SoberRecovery : Alcoholism Drug Addiction Help and Information
Your friend,