PDF's Everywhere!!!

[Tc556guy]

I know this won't work in all cases, but there is something else one can do to preserve the info on the PDFs; practise the skills and try out the ideas described, so they become internalised. This real world experience, coupled with the documentation, then becomes a potent resource for passing the knowledge on to others (your kids?) post-SHTF. If the documentation (electronic or paper) does become inaccessible for some reason, the word-of-mouth option is then still there.

A good suggestion, but reference material will always be handy to have.