I switched from Mac to PC a couple years ago, and learning to use the Windows key for those slightly-obscure special character shortcuts (e.g. em-dash, accents) took some angry rewiring of muscle memory.
When I first started to learn touch typing I used some popular documents. It recommended to do that, especially for people with smaller hands.
I eventually moved on from it, but I only use left shift since I can’t reach right shift in any sane manner without moving my whole hand.
And all the poor bastards with that wireless Apple mouse that charges via USB on the goddamn bottom of the device so it can't be used while it's plugged in. 🤦♂️