Check out these websites for useful information. I am adding these for your convenience each of these websites may/will have there own guidelines that you will need to adhere too.
This one has the CERT Training videos in it, look under Video Material.
If you want to down load the Emergency Response Guidebook this is the website for the book, a training video, and were you can get the app for your Smart Phones (this cost $0.99)
This a great guide from the state of Michigan.
These are camping websites but may help you think about food for an emergency.