To get better with computers, make mistakes and peruse the settings
I’ve often wondered what I do differently that makes me “good” with computers.
Being willing to make mistakes is huge, although I empathize with anyone who is unwilling to take that risk; a single button press can destroy hours of work… or at least appear to. Sure, many things can be undone, but what good is that if people aren't taught how to undo them? You might be like a high school friend of mine, who was amazed when I reminded him that his “lost” paper was probably just in the “Recycle Bin.”
In thinking about this question, I’ve also noticed one habit that seems to help: when I install a new app or set up a new device, I immediately peruse the settings. Doing so is a great way to learn what the software is and isn’t capable of. It makes the software seem less “magical.” It bounds the possibilities. I recommend giving it a shot.