Welcome to SR and congrats on deciding to live a sober life. Your child will never have to see her parent drunk/drinking and all the mess that can cause, as you well know.
It IS simple but not easy. There are many face to face support groups out there for those who want to stop drinking. THere are also many people who do it on their own. Some use this site as a recovery tool. Some read everything they can get their hands on about alcoholism and the knowledge helps them stay sober. There are also 'sticky' posts at the top of the page in the Alcoholism forum. Lots of info in those posts.
Whatever way you choose, I wish you the best. :ghug3