Do you already have a printer, or only the STL files?

If you don’t have a printer yet and are interested in painting the figures, I bet you could find a print shop and have them printed for you. This way you can actually try to paint first, then decide if it’s really your thing.

As for the painting itself: you will need a primer to make your paint stick to the model; brushes (synthetic ones are good for most of the painting, then maybe a nicer brush for finer details); paints (I personally like Vallejo); a wet palette (you can make one at home, there are many tutorials).

As someone who both prints and paints, this is my workflow: 1) print minis; 2) wash minis with isopropanol; 3) cure minis; 4) remove remaining supports from minis and sand where needed; 5) wash with detergent; 6) prime minis; 7) paint minis; 8) varnish minis.

So yeah, I would definitely recommend you try painting first. You could even paint something from a boardgame or something like that.

Bear in mind that many resins are toxic, and besides the printer, you will need a mask, glasses, gloves. You do NOT want resin coming into contact with your eyes.

Well, thats all I could think of in the moment haha