I would also suggest in the "basics" of working with MorphOS.

I'm talking from a personal experience, when I first started playing with MorphOS, there were so many small things that I just didn't know how to do or the interface actually works. ( Obviously this is heavily inspired by Amiga OS )

Things like
- The right click to bring up the menu bar
- How to do theming, per application or in general
- Why can't I move my windows "outside" of the viewport
- How to create new screens and how to swap to them easily with shortcuts
- How does "installing" of apps work and where can I place them

Etc.

It might get people to play more with the OS instead of maybe getting put off because it's frustrating not knowing how to do "normal" things.

But after I've learned to use the OS better, I absolutely love it!