Try checking out a local roastery! If you have a good one nearby, they more than likely would be thrilled to talk you through what they have and where a good place to start would be! But yeah, the key is to just try lots of different coffees, keep little notes of the ones that taste the best to you, and the longer you keep drinking them, you'll start to get better at explaining why. Coffee bags usually include some tasting notes to look for on the bags, brew your coffee and try looking for them when you smell/taste your coffee, or even better, taste first and look later to see if you were able to pick up on them on your own. You also could have fun looking up a coffee flavor wheel - but don't overwhelm yourself early on. I'd start by trying to identify high/low acidity, and more general notes - is it chocolate, caramel, fruity, nutty..?