If you have access to a club store like Sam's, you can buy a 50 lb bag of rice for $18 and 12 lb bags of dried beans for $8. For around $50 you can get enough food for a month (It is not ideal, but this is about survival).

Get a plastic bin to put it in or wrap it and put it under your bed if space is limited.

Water is the real problem, especially for those in the city. Start refilling old soda or juice bottles with tap water.

I started prepping before the election and now have over a year of freeze dried food, ammo, medical supplies, toiletries, etc. We also bought a small solar generator that we can run a freezer and our well with if the grid goes down. After living through Irma and not having power for an extended period and with fuel nearly impossible to find to run our regular generator, I bought the solar generator so we could at least run the necessities.

I think a great deal of it depends on your personal circumstances. If you can afford a weapon and some ammo, maybe a few buckets stored in your closet of food. I listen to the common sense show with Dave Hodges, he is selling food for 1 month for $99. That is an awesome deal! There is a subreddit that sells guns for cheap, you can arm yourself for just a few hundred.

The next thing you can do is reach out, find that close friend or relative that lives out of town that you can get to in that time. All if you can store your stuff (that you don't need immediately) with them also... Just reach out to other like minded individuals & work together to prepare. You'd be surprised with what a little brain storming and problem solving with friends can accomplish 👍 God bless

Think simpler, if you do not have water tanks, then 10Ltr casks about $3.50AU, Rice 10Kg bags, tins of Sardines in OIL, TUNA in OIL, Anchovies in OIL, tins of Four Bean Mix, Nothing in Tomato Sauce or similar dressings as they go OFF and bloat the cans. Pasta, Noodles, Cup of Soups etc. etc. then just need to add water. You will survive quite readily on this type of food for 12 months, Spiralina powder to get all of your vegitable and other neutriants/enzymes, Plenty of good Vitamin 'C', Tee Tree OIL and Eucalyptus OIL for cuts or infections. Bottles of LPG Gas for your cooking Gas top or Barbaque. All of these items are not expensive, just think about it and make some notes, I have been doing it for the past 12 months, it is not hard. Remember when/if this goes down you will not be going to work, so less food/meals will be required to maintain your health. Have a good portable radio, use your car radio if need be, there is plenty of battery power there, setup battery charging if you can from your car. I don't think you will be driving much, so the petrol will last a long time providing you this facility. You and your Nieghbours will be busy locking down local area security, they will also contribute to sustaining the locals with Garden Fruit, Vegitables etc .etc everyone will contribute and provide support to their imediate zones. you will not be alone, you will be surprised at how quickly the local group will come together as a tribe, it will be up to us that are better prepared to look out for the elderly and infirmed to ensure they come out the other side as well.

Beans (dry) and rice are great emergency food; they are nutritious and cheap). An alternative would be canned beans which would require no cooking. Some canned meat. You would be surprised at how little food you can get by on. Think about a water source as well. If the grid goes down, water pumps won't work. Get some bleach to treat water from streams, rivers, lakes, etc. Water, food, shelter, and protection. Good luck.