Related point but not a direct contribution to the teaching side of the conversation, @Dan Hassan @Alanna @mix I've been looking at MasterPassword this week, personally I think its pretty neat and has considerably less dependencies than other password managers I've used.

I've written a basic sketch on how to start using it. Future guides could include more in-depth exploration of how it works, how to ensure you can always access the software, etc.

Its easy to use, I (and I imagine others learning how to use it) would be more interested in how why/it works than how to set it up.