Because I have lived in more than one remote place (back woods of Northern British Columbia), I have learned to stock enough food and fuel so that if we got snowed in and our power went out, we'd have been able to survive. I grew up on a tiny farm (maybe 10 acres) that my great grandmother kept in very thrifty times so I've learned how to cook and store things economically.
I think the two most important thing about being prepared are staying humane and knowing how to do things.
Know the area that you are in and if you had to forage, what you can forage.
Understand the climate, soil conditions and basic gardening so that if you have to garden, you can. Learn how to dehydrate, can and preserve surplus food. Learn how to make beer and wine and even how to distill.
Learn basic building, mechanics and metal work.
Learn how to purify water.
If you can, get your hands on the Army's "Medical Specialist" field manual. If you are ever caught out with someone seriously ill or injured in a disaster where you know you can't get medical attention for several days, it could save a life. Books on how to make pain killers and other medicines from plants and animals. Books about plants and mushrooms that grow in your area with pictures are also very helpful. Books on how to humanely trap and fish and on how to prepare your catch. Books on how to raise chickens, rabbits and goats or other insects, reptiles, amphibians or animals that can sustain you (or alternatively kill you if you eat the wrong one).
I've gone to a lot of "prepper" sites online to see what I could learn and unfortunately, they are more about guns than anything else.
My opinion is that guns are not real security and if you have one, it should be reserved for killing larger game or at very least, as a
last defense mechanism. If "security" becomes an issue I think that subterfuge, traps and camouflage are much better tactics. Think bow and arrows and pepper spray (with the right guidance, you can make your own of both).
It's nice to have some creature comforts like a radio, solar lighting and solar panels, a collection of good knives, propane, non-electric kitchen tools, hand powered wood working tools and a reasonable stock of things like medical supplies, coffee, alcohol (the kind you drink), sugar, salt, honey and heritage (non-hybrid) seeds for the garden.
Get to know your neighbors, it could save your lives and maybe theirs. If they're diabetic and you have a generator, put their insulin in your fridge. Bring them items from your garden or better yet, plan your gardens together so that you grow different things and then share. Can and preserve food together. Reach out - help where you can, if you know how to do the right things it won't be "taking food from your families mouth". Learn from and teach each other.
Just my two cents.