Have been a fan of their manuals for 40? years.A lot in them about preps that every person and family should know and practice.And no they haven't beat down my door to convert me.
I printed this off a few years ago. But it is something IMO everyone should have or read. There is also a hardbound edition that you can purchase. From @CATO's link Another Voice of Warning: Prep Manual - General you can find the manual in free resources