You might want to read The Zombie Survival Guide written by Max Brooks. Some of it is very good SHTF advice. I bought it for my son and we had so many great discussions about the advice in the book that I decided to read it. The book is definitely tongue-in-cheek, yet it has a lot of practical information. It is also a great book to get your kids to think critically with out them realizing it.
Thanks for the heads up....most certainly looking for anything related to the subject for general knowledge, but more so considering the times in which we find ourselves.