Welcome to SR.
It sounds like you really want to change your life and that's the first step. I would recommend you spending time on here. I was hooked up to this site for hours on end in the first week or so. Read how others are getting and staying sober. There are lots of methods that work.
If you are drinking heavily almost every night, I would also recommend you seeing your doctor to talk about how to detox safely.
Good luck, keep us posted x