Again. Welcome back.
Try to set aside funds from each payday. Buy dried package foods. If you buy dried rice for the evening dinner you're on the right path.
Think about water supply and energy production.
Buy seeds to grow your food.
A firearm is just part of the equation. Get to know your neighbors. You may not like them but they know you. My ex is a trauma nurse in the country surrounded by farmers.
To me? That's about it.