I went to this roller rink repeatedly when I was young (through 8-10) and I learnt to rollerskate and rollerblade, I was lucky enough to start relatively young so if I did fall (which you do a lot while first starting out (I would know) I didn't hurt myself too bad.
My brother and I (when I was much, much younger) owned skateboards but never used them; my brother was slightly more interested in skateboarding than I was, but neither of us actively participated or visited skate parks. Last time I rollerbladed, I was probably at the age of 12, where I did a brief skate across the patio of my grandfather's backyard. I have no idea where my rollerblades are now; I probably grew out of them either way.
I got into ice hockey when I was around 15 and wanted to learn how to ice skate. I went with my younger siblings to this small indoor ice rink we had in town. At that point I hadn't skated in any form for a long while, so I couldn't really say if ice skating is so inherently different from skating on hard floors that someone who knew how to do the latter couldn't properly do the first, or if I had just lost my touch with skating lol. I hurt my knee falling so many times (I hadn't brought gloves, and I'd say there's nothing more miserable than pushing yourself off cold wet ice, freezes the hell out of your hands (I was smart enough to bring these wool gloves next time I went).
I was practically glued to the boards, which, looking back on it, probably wasn't a good idea because I could skate for a pretty damn good while in the center away from the boards (this was just from learning the basics through observation of hockey games and how players move). My younger sibling managed to learn how to ice skate in the few times we went though, I heard that it's much easier to learn to skate when you're younger and/or generally smaller because of the balance (and also because injuries are less severe, you aren't falling from the same height you would when you get taller).
