There should probably be a community for this, I'd be interested in things like disaster prep (earthquake kits, supplies etc.)

In terms of resources, this is something I keep installed on my phone:

• https://f-droid.org/en/packages/org.ligi.survivalmanual/

In the same theme, I have these other reference apps:

• First Aid: https://play.google.com/store/apps/details?id=com.cube.arc.f
• Knots: https://play.google.com/store/apps/details?id=com.nynix.knots3d

I haven't explored those apps much, but rather left them installed for if I ever need the information. I also have 'Medical Wikipedia', 'Sky Map', 'PlantNet', and 'Merlin', but I don't think I'd find much use with those in a survival situation. I would need to learn other skills first.

Not to hijack your post, but if anyone knows of other cool offline reference apps, that would be useful in a survival situation, it would be cool to know!

I found this book to be a good start: https://www.howtoinventeverything.com

Download Wikipedia and put it on a USB drive. Then buy a portable solar panel so you can charge some electronic device to view the wiki. There's a lot of farming, gathering, hunting, etc knowledge on Wikipedia.

The text only download is way smaller than the media download, but the media may be worth it for identifying plants.

There is an android app which may help.

Also, having some information in your head will definitely help. I'm not an expert but I try to brush up on random relevant topics when I get some time.

http://www.survivorlibrary.com/library-download.html

Just do a search, there are many sites that cover a lot of topics that also have downloadable books.

I think I have an old Boy Scouts survival manual from the 50s that includes most of this.

https://kiwix.org/en/ Is a good tool that'll let you download and view Wikipedia offline. The whole thing.

If you don't already, a good thing to own is a road atlas of your country.

I also have been wanting an astronomical almanac that would have info like sunrise/sunset times (got that idea from I Am Legend), and various other sky stuff data I don't know how to use for timekeeping and navigation but would like to learn :] My lack of expertise (ok, maybe also motivation) has prevented me from finding one.

There used to be agricultural almanacs also, with recommended planting dates. I looked into the extant USA ones (Old Farmer's and Farmer's) but they seem to have devolved into something more like annual rustic-themed magazines with barely any useful info... :[

https://www.artofmanliness.com/skills/outdoor-survival/build-a-bug-out-kindle-a-digital-survival-library-at-your-fingertips/

This is something I stumbled upon once, I haven’t read it in detail. Hope that helps.

Permies has most, maybe all of this. Pretty neat community.

Check out the SAS Survival Handbook, that covers a good chunk of what you're interested in.