Beers are very much an aquired taste. There's your commodity beers and your piss beers from the big national brands like Pabst, Miller, Coors, etc. which largely are trying to sate a pallete that never liked the moonshine from the prohibition era (and all are crap in my personal opinion. It's good for getting you buzzed and that's about it), then there's your microbrews which will vary wildly in style and flavor (if it's on tap you can just tell the bartender you've not really had beer before and ask what they recommend and if you can try it before you commit to a full glass) and then there's the stuff people don't talk enough about: ciders (it tastes like apple juice but with a sharper, fuller flavor!) mixed drinks (again, ask the bartender if you're unsure), and probably some other ones I'm not thinking of before you move onto the whiskeys and bourbons.

So basically it's a wide world of alcoholic beverages and honestly people don't encourage experimenting enough