I've never touched the stuff, mostly because I'm a boring teenager who doesn't go to many(read any) parties that don'tinvolve aset of nerd dice and character sheets. Oh, also under-aged(18 years old)
Don't worry, I didn't start drinking until I was older, and that was when I found out I had a stronger constitution than my mom, dad, and older brother. Of course, that was also the day I found out that it takes bit of time before the effects of alcohol kicked in . . .
Pro-tip: If you ever go drinking, never do it on an empty stomach, and if it's your first time, don't do it with friends - family is a lot safer. Finally, if you're unsure about how much you can handle, consider anything above 8% as poison, and then see how much you can handle before getting smashed.
. . . I just realized that I'm giving drinking advice to someone who's under-aged. I'm a terrible influence.