That's great, guys - and can I make a suggestion, from a woman's perspective?
The tutorials are great reminders, for if/when the situation is a bit intense, but hands-on learning is better.
I'd never hooked up a propane tank. Seen it done a couple times decades ago, but that was it. First time up here, I watched Tom. Next two times, I changed it with him standing right there. Now, I can do it unafraid. (I have a very healthy respect for things that can go boom.) I could have had the best detailed how-to manual in the world...and without that hands on first - I would have have never tried to do it. Period. Let me know if you need other examples.
If I might suggest - next time you're home, go blow out the pilot light on the HW tank. Let her watch you light it, then blow it out. Then stand and teach her, with her doing it. Then blow it out again, then she lights it with you standing silent. Then, when it goes out while you're not there - your most awesome tutorials will remind her how to do what she's already done a few times. Knowledge is one thing, confidence another. You can give her both.