I had a similar weight-gain experience right out of college. I graduated at 6'0" about 165. When I started working a sedentary desk job and drinking 3-4 craft beers a night, I broke 200 before I even realized it. I'm still working on getting it off several years later, but I'm now trying harder than ever. Anyway, I wanted to make a few specific points.
You said it's "too much beer." That was definitely one of my problems as well. Perhaps you're drinking shitty macrobrewery beer, but if you're more of the foodie type and in to craft beer (or even if you're not), I would recommend you switch your interest to wine. Obviously cutting out all alcohol will be the quickest path to losing weight, but it may not be sustainable permanently. Try cutting out all alcohol for a month or two, but if you do start drinking again you can drink 1 glass a day, at most 2. Wine can be a bit daunting, but once you get into it a little it is great. I was obsessed with beer, but hardly look back. The book Drink This is an excellent beginner's intro. My library had a copy.
Many people recommended weight training. I have started doing this in the last year, but I didn't know the first thing about it. I never played any organized sports. I was clueless, but I do like reading. I found the book The New Rules of Lifting (also available at my library), and it is a great intro to weight training (as well as some nutrition tips). The trainers lay out complete programs, and the first eight weeks or so are dedicated entirely to fat loss. I'm not sure if you will necessarily lose pounds per se, but it should definitely help you get more "lean."