Friends and Family of alcoholics are always welcome at AA Meetings, but the better choice would be Al-Anon -- Since Canada is a pretty big place... here's a website that will help you find a meeting:
http://www.al-anon.alateen.org/meetings/meeting.html
For the first meetings, you honestly,don't have to do anything, you can just sit there an listen to people's stories. When you are ready, you can talk... someone may say something that strikes a chord with y ou and it may really want to make you speak.
Under Canadian health care, is any sort of mental health covered? What about counseling office at your school, or even in the army, I'd imagine one of those places would offer low cost or no cost counseling.