I have been asked many times, "What should we do to prepare?" and I haven't given too many links or resources, outside of gardening.
Here is one that looks promising:
http://www.grandpappy.info/indexwil.htmI just printed out his article on "how to find water and make it safe". That seems to be a REAL important one, since you could have all kinds of food stashed, but if the city water stops flowing (for whatever reason) it's DEATH in 3 days -- and a slow painful one at that.
Matthew