The hardest thing to do is to actually get started. An easy way to begin is to go to home depot or Lowe’s and get a supply of 5 gallon plastic containers and a magic marker. Then, when you can go to the store and buy the rice, beans salt and other staples, you have a place to store them that is water, bug and rodent proof. Also look for some oxygen eliminated packets to put in the bottom of these containers. Also good for storing ammo. Use magic marker to label all containers.
It isn't hysteria, and GMO isn't 'evolution'. One of the biggest issues for preppers and survival is that GMO seeds will not reproduce in the same way if the seeds are saved and re-used. In fact, in many instances (maybe all?), it's illegal to save the seeds and re-use them! It's far better to track down heirloom seeds that are native to your area and/or compatible with your climate. A good place to start looking is