I don’t drink…wine. 
Or beer. Or mixed drinks.
When I turned 21, I got drunk to see what it was like. Because I was dumb, I skipped the supposedly fun part and went straight to the “ugh, what was I thinking?” part.
But for one reason or another, I decided that one of my characters is a raging alcoholic, and a number of others drink in social settings (parties, bars, wine tastings, etc.)
Obviously, more research is needed. So please recommend any good books (both fiction and nonfiction) on alcohol.