Past.
I suggest stocking up on the printed past before it’s lost.

I’ve a late 1800s edition of The Queen Of Republics,- Or A Standard History Of The United States on my shelf, an 1884 edition of The Worlds Cyclopedia and Library of Universal Knowledge and recently added a number early 1900s ‘how tos’ from Audels to my Audels shelf. Around 60 years ago I was able to bullshit my way in to a machinist’s job with buzzwords I got out of Audels’ Engineers and Mechanics Guide and avoid damaging lathes or milling machines or loss of face or fingers by referencing those guides, learning while I worked.

I contend that, with just the information printed in the volumes I noted above, once could, from scratch, rebuild a civilization to the early 20th century level.

Now, while the weather’s still a bit cool, I think I’ll go out, fire up my forge I made from a section of an old oil drum, and hammer out a set of tongs from some discarded rebar.

By the way; while I do have an electric blower I built attached to my forge and while I’m now firing with coal, if the fit hits the shand and I become (electrically) powerless, I’ve a hand operated blower I can attach and I can make around a hundred pounds of charcoal from three hundred pounds of wood.