Hi,
Well, this isn't a book, but it is 'recorded material' and intended as educational. This video was only posted four days ago, so we'll see how this develops - not sure how much established preppers will get from it, but from what I've watched so far it seems much better presented and recorded than 90% of other stuff on youtube.
https://www.youtube.com/watch?v=fdNOXjZA4Ds
Apologies if this has been posted elsewhere.
Regards,
S.