Wine tasting really isn’t as intimidating as people seem to think it is. I’m not great with all the “mmm, blackberry” and “eurgh, capsicum” stuff either, but it’s okay, because as soon as someone in the group just blurts out a random taste, you can just chime in with a yea or nay, and the great thing about taste is that it’s subjective, and no one can actually tell you that you’re “wrong”.
Still, just in case you need them, here’s some more tips on how to fake it ’til you make it in the wine world. And you will “make it” if you drink enough wine. Basically, all the flavour palette stuff just comes from experience. Oh, and drinking more expensive wines. Cheap wines, i.e. the stuff most people drink most of the time, tend to be intentionally one note. So they’ll have one big dominant flavour and that’s all. If you’re all like, “I’ve never had a wine that tastes of freshly cut grass with a crisp aftertaste of floral and citrus!”, then this is very probably the reason why.
It’s not you, in other words, it’s the wine.
But, really. Just drink stuff. If you like it, you like it, if you don’t, you don’t. It’s not actually a test. (And anyone who treats it like it is is very likely a pretentious asshole who doesn’t know what they’re talking about anyway.)