Fellow student, known for loving a drink here! I can tell you I know how difficult it is to make the decision. But you can give yourself plenty of credit for admitting to the problem and doing something about it! This will be a great decision. I myself was getting into fitness before the drink and it stopped me, as well as messing up university work.
I would reccomend you see a doctor. If you have been drinking a large amount of alcohol everyday, you will get withdrawl symptoms. If you have not read about alcohol withdraw I think it's best you do an internet search just to make yourself aware.
Welcome to the website. I have only been on here for a day and let me tell you this place is fantastic. Keep coming on here, it will help you massively. Great to have you here, and good luck to you!