For the prepper aspect, have you perused the Fox Fire series? It's the homesteading skills from the rural Appalachian people, and covers how to survive independently using your own hands. It's a great encyclopedia basically of skills that take you from just a tech bunker to actually living off the land.
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Foxfire books are awesome, the shelf is in disarray but the whole series is here 

Thank you! I’m not familiar with them. As long as the kids are in school we’ll be in an urban area, but 6 years from now we can move.
Thanks for weighing in!
I used to be part of an urban gardening education group. There's likely one in your urban area. It's feasible to gain small scale skills towards food and water independence even in an apartment. It's a big confidence boost especially if you're prepper minded already 🥰