The Church of Jesus Christ of the Latter Day Saints, members who are better known as Mormons, one of whom may end up being our next president, has given much thought on how to survive an emergency and the manual stemming from it can be found here for downloading as a pdf file.
Very little of it involves defense — albeit it does recommend a 12-gauge Remington pump 870 Express Magnum shotgun with an 18-inch barrel if you should be interested — and most it involves food storage, hygiene, and acquiring basic knowledge like how to turn off your water main or restart your gas heater.
To see what Delaware County missed last Tuesday watch the scenes from Staten Island.
Download it the file and give it a glance. The LDS gives it out for free.