Try the following sites
Emergency.com
Ready..gov
Fema.gov
Survival-center.com    very good
disasterlinks.net
knowledgehound.com
Backwoodshome.com    this site is great lots of free info they put out a fantastic magazine worth every cent..,by the way the "pull date or use before" doesnt mean anything food that is canned will last for years it may not taste as good but as long as the can is not puntured to allow bacteria to enter it will keep.
also water will be your biggest problem. As to ammo stick w/ a calaber the is easily avalable   .22 223 7.62 and practice practice practice    Get involved w/ your local gun club lots of like minded people there.   as to Shot gun stick w. 12 0r 20 ga.
the backwoods home site has most of their articles avalable on line