Having food available is part of the issue. The other part is having water. There are many, many things to consider. Amongst those things are caloric intake vs caloric necessity; nutrient values; ability to cook the food you do have; water to cook it with--water that is safe; heat you'll need; shelter; what it is you think you need to be prepared for; length of time you will need the food supply.

There are too many factors for you to 'start from scratch'. There are some sites that will help you make decisions. Here is one.

http://www.zyz.com/survivalcenter/index.html


You will get many suggestions and most of them good. However, IMO, reading is step one. That site has a good basic overview available for a few bucks.

Best to you and your family.