One suggestion, if your on a budget, try stocking up on the basics, beans, rice, wheat and double can every week you go shopping. this means that every time you go shopping, you buy double the canned goods you ordinarily buy. then place the doubles aside. Buy food you will EAT!! buy condements, wild foods and basic fare go down easier when combined with hot sauce catsup etc. if you have limited space, buy a metal cabinet from a garage sale (Salvation Army, thrift store, junk shop) and designate it your "preparedness cabinet" and use it for storing food water etc. If you live in an appartment, buy a woodstove anyway, and buy enough pipe to stick it out the window. take a piece of 3/4 inch plywood the size of your opened window and cut a hole in it. line it with sheet metal and fibrglass insulation. when you need it, stick the plywood in the window, hook up your little pot belly stove and use it. Just be sure to spread plywood over the area you will be placing your stove and put it up on blocks., some more fiberglass works good to make a fireproof backstop behind your stove. and BE CAREFUL. When not in use, put a table runner on the stove top, plug the hole and add some "rustic nicknacks" like a cast iron pot and a Cast steel iron. you can use these later.
If your going to Cache things, cache the basics. So many people I know who have caches have cashed thousands of rounds of ammo , guns and such. while thats good, add in such things as a durable boiling pot, an axe covered in old motoroil and cloth (which can be used to start your first fire. some Magnesium firestarters and some extra warm clothing in those space bags they advertize on tv.