Seeds? I'm a bit low on those. Otherwise, I'm as ready as I can be. I hope it doesn't happen, but hope is not a strategy.
My suggestion is that you get both hybrid seeds and heirloom seeds.
The Hybrids will be what you can find in the grocery store and are the type you are used to purchasing. Hybridized for food production and what you are used to consuming.
The Heirlooms are international seeds handed down for generations for proven reliability, and disease and blight resistance.
Even if you don't plant the seeds, they can be used for barter: although if you start heirloom plants from seed, they are considered more valuable.
Or stop over at the FReeper gardening thread that is online here,
for information, moderated by "greeneyes" most every Friday early evening :
https://freerepublic.com/tag/gardening/index?tab=articles
Better have water for those seeds along with soil amendments and insecticide and fungicide. A garden needs fencing and ammo to keep animals and humans out. Pre-learn foraging.