When I was in my early teens I got my hands on a copy of Photoshop 7 from my granddad and spent so much time on tutorial websites and Worth1000, messing around with the tools and making fake digital post-its and stuff like that. I think Photoshop is definitely up there in terms of complex UIs, so having that hands-on experience was crucial in learning how to learn other UIs.

It also helped that a lot of the tutorials by that point were for CS3, which had warp features that 7 didn't have, and I had to experiment to find workarounds for the missing tools.

The only device where that has failed me was a washing maschine with a mixed analog and digital UI.

With the old ones you could just turn the knobs. With the new ones you basically have a full touchscreen App interface. But for that period where things started to get more digital but not completely, it's absolutely awful.