drink beer before its legalMy own advice would be: don't bother with alcohol until you're well beyond drinking age. And definitely don't bother with heavy drinking of any sort, in those years.
A lot of this has to with the observation being a student really is a 24x7 game, in those years (if you've chosen to go the student route, that is). While I definitely wasn't a "grind", I have to say that the only reason I made through the system as far as I did was that, aside from a healthy amount of distraction (movies, shows; and parties for the sake of socialization -- not for the alcohol) I really was studying, or thinking about the content of my studies, pretty much all the time. It was really all about being "always on" and intellectually focused, all the time.
And getting hammered on anything like a regular basis -- which is pretty much what the college drinking scene is like, these days -- really claws a huge chunk out of that dedicated focus. I'm just not sure I would have made it that far if I had taken up the interest in casual drinking in my mid- to late 20s.
It also, BTW, claws a huge chunk out of your wallet. $5 for a lager is nothing when you have a regular "adult" job, but (scaled up to rounds of 3-4 every few nights) it's a lot when you're on a student budget. There's only a certain period of your life when you can meaningfully benefit from the kind of ascetic detachment from the temptations and corruptions of a fat, "adult" paycheck. Later on, when you're more or less forced to go the high-paycheck route, you can indulge in the comfort-distraction that goes with it.
This is the time of life when you should be getting intimate with the local university library; reading Feynman or GEB or any of the other books mentioned on the bus; learning to draw or to play an instrument (just to show yourself that you can); and spending your last dime on that Godot flick and, perchance, a can of tomato sauce to heat up in fleabag apartment you and 4 others share downtown.
But beer? You'll have plenty of time for that, later.