I've provided a web address below to help with food storage and other preparation. She practices with a lot of products and has short videos on how to use many of the basics, like whole egg powder and dry milk. At one point in mousing around her website, I saw some information that I want to pass echo, because it is REALLY important.
Being frugal in your life so you can allocate resources to family preparedness is NOT the same thing as having cheap, low quality preparations. You don't need to have the 'top of the line' of everything, but don't buy or store things that you cannot rely upon, or that will not nourish you. Having a three month food supply doesn't mean a closet full or saltines or ramen. You need to store healthy food that will give you a variety of nutrients. The food storage analyzer can help you with this, even if you never buy the products they sell. Just transcribe the nutritional info into the section for your own groceries. Then look for reasonably priced items to fill in the voids.
You may not be able to afford the freeze dried juice of hand-squeezed blood oranges, but Tang or crystal light may provide the vitamin C and 'change of pace' flavor you are looking to find for your storage. Remember, if you are in a position to live from your food storage, you will probably want more variety than 'bread and water' as well. Plan it in advance, while trying to duplicate or at least come close to what your family might normally eat in the process.
The same goes for non-food. You need toothbrushes and toothpaste, and a way to stay clean if there is a water shortage. Don't forget the toilet paper, either!
So here is the website: