4. Learn to hunt
Having a garden and greenhouse is one of two requirements in the event of disaster food planning. Having a gun and the ability to shoot and eat animals is the other. Get a gun, take a hunter's safety course and go shoot something. Learn how to gut it, skin it, and process and preserve its tasty, bloody flesh. Being able to procure your own protein will be vital in the months and years after a disaster. You'll most likely have to gun down dozens of attackers in the few years of living you'll be able to scratch out after Manbearpig's victory.