Welcome, Meggygoround. I'm sorry for what has brought you here, but I know you will find support here. Others will be along soon to give you some ES&H, including those with more experience with abusive relationships.
You are going through some huge changes at the moment, so please be gentle with yourself. It's okay to cry, have a pity party, whatever. You are grieving - probably more than you realize right now. Do you have a friend or family member that can spend some time with you - watch a movie, play a game, anything to busy yourself?
Please learn about alcoholism. There are many resources online, books, etc. I would recommend an AlAnon meeting for some face to face support, and keep reading/posting here. Unfortunately, you are not alone in your situation.
The main thing you should focus on now is you - make sure to get plenty of rest, eat well, and do things you enjoy. Get out & spend time with friends and family. Pamper yourself. Big hugs, meggy, you've been through a lot.