Like others have posted, start small and build. I recommend you start with a 72 hour kit for home. Once you have that squared away. Then build your food storage program. Search the web for $5 a week program. Basically the idea is to spend $5 a week to buy a couple extra cans, some grains, etc. The program indicates which foods and amounts to buy each week. The key is to buy a mixture of products each week so that you all ways have some that is nearing expiration, some that is half-life, and some that is new. It also provides a balanced diet as opposed to 100lbs of rice but no veggies, fruits, protiens, dairy, fats, spices, etc.

Gradually you build your storage over time. The big thing to remember about food storage is, ROTATE, ROTATE, ROTATE. That is accomplished by the mantra, Store what you eat, eat what you store.

Below are a few websites to provide additional information about longer term survival or preparedness vs. short term emergency.

http://www.survival-center.com/index.htm Captain Dave’s Survival Center
Good primer on what to store as well as vendor of supplies

http://millennium-ark.net/News_Files/Hollys.html Noah’s Ark Emergency Preparedness Extensive information about what and why.

http://www.pep-c.org/homepage/ Peninsula Emergency Preparedness Committee
More 72 kit oriented.

http://www.pueblo.gsa.gov/cic_text/misc/disaster/famlykit.htm FEMA Family Disaster Kit Good ideas for the basic 72 hour kit.

http://www.emergencylifeline.com/IEindex.html Emergency Lifeline Supplies
This site is a vendor of supplies that might be useful to have for emergencies.

http://pub35.ezboard.com/bplainsmanscabin.html? Plainsman Cabin
Discussion about longer term planning both wilderness and urban/suburban.

http://www.frugalsquirrels.com/cgi-bin/ubb/ultimatebb.cgi Frugal’s Forum
Discussions. General discussion can be caustic and political. Other forums are more equpiment and planning.