I think the place to start is to get 2 things sorted: 1. Plan of Action 2. List
1. Plan of Action. Decide what you're prepping for and what the action is. I've made a recent choice to ignore end of the world stuff (at my peril, lol!). So that leaves me with likely events which for me would be:
a) job loss = no money/food/provisions/power (that would cover power cuts)
b) a house disaster ie: sinking/flooding/burning down (I'm in mine shaft area) = having to evacuate - list accomodations /bug out bag
c) pandemic = bugging in / medical provisions / water etc
2. Make lists for each of the above ie all the things you might need or need to know/do in your event. I've decided to stop buying tons of stuff and put the money aside instead. In the event of needing fast supplies (pandemic starting/or end of the world event that I haven't planned for) I'm only hundreds of yards from a fairly secluded shop that sells everything, and I've got the list of what to get.Obviously people in different areas have different plans. It's unlikely I'll have a civil unrest problem here, although the holidaymakers can get a bit over exciteable
Worst case scenario is s**t happens and you're running about like a headless chicken with no clue what to grab or what to do. This is what we're trying to avoid.
You'll probably find it all comes down to basic needs anyway - food/shelter/safety.