Might already be familar to many of us here, but for those who haven't tried them:

Here are some entertaining stories that walk through details about surviving off the land without electricity in worst-case scenarios like societal collapse.

The books can be a good way to start thinking through many of the topics in this thread, in a much more in-depth way than watching a film like The Survivalist or The Road.

The Survivalist series by Angery American - https://www.goodreads.com/series/107392-the-survivalist

The Coming Collapse series by James Wesley Rawles - https://www.goodreads.com/series/124543-the-coming-collapse

The 299 Days series by Glen Tate - https://www.goodreads.com/series/110799-299-days

Holding Their Own series by Joe Nobody - https://www.goodreads.com/series/97225-holding-their-own

The New World Series by G. Michael Hopf - https://www.goodreads.com/series/130561-the-new-world-series

Disruption series by R.E. McDermott - https://www.goodreads.com/series/184177-disruption

The Economic Collapse series by Mark Goodwin - https://www.goodreads.com/series/153808-the-economic-collapse

These are just the series that I've read and liked so far. You can browse more by checking the similar titles that Goodreads displays.