First off, you have to decide how likely you think dislocation is, now, in the midterm, and in the long term.
You need to think about how severe the dislocation will be, too. No shooting that I'm aware of in Iceland, not yet, anyway. Argentina, you have an increase in street violence, but not total civil war. LA/Rodney King riots, and post Katrina New Orleans are the closest I've seen to "mad Max" scenarios in recent times.
Answers to the above two questions give an idea of how you approach the most important question of preparing of all, opportunity costs. It can be very difficult to "repatriate" cash currency withdrawn from the system, and more difficult yet if that cash is converted to seedstock, a large wind turbine electrical system, driven water wells, etc. Cash and physical assets forego interest, dividends, and gains. On the other hand, cash in the bank wasn't much good during the great depression. Balance the response and preparation to the threat level, with opportunity costs firmly in mind.
You can find ways to mitigate opportunity costs, putting your assets to work double or even triple duty. My new well set me back $2500, plus another $1200 for a heavy duty handpump installed on the old one, but the iron from the old well was ruining my clothes, plumbing, and fixtures, so I was able to "offset" much of the cost as loss prevention in the long term.
Once you formulate answers to these questions, you can begin to plan your actual preparedness structure from a logical point of view.
Unless you have a crystal ball, you cannot know in advance how a collapse will go. Massive deflation and you're stuck holding gold, you're in trouble. Massive inflation and you're holding currency, same deal. Total chaos and you are sitting on both cash and PMs, with no food or water, again, you're in a world of hurt.
Diversification applies to preparedness as well.
I can't stress this enough, so I'll just repeat it.
Diversification applies to preparedness as well.
Historically, short term problems far outweigh longer term dislocations. You can get a leg up on logical, efficient preparation by identifying your needs, and by prioritizing them in terms of how long a critical threat takes to develop.
At the top of any threat list , you want to consider thirst, and security, and hypothermia. A desperate group of people can kill you within seconds. Not so likely, not today, anyway, but very quickly lethal if your number comes up.
Go without water three days, and you go down, period. You may very well be alive, but you will not be functioning. If you have to struggle to find potable water, you will devote hours poer day to the task, hours you will not be able to use to address other problems.
Hypothermia can take you out within a couple hours. Tough guys need to remember 6 SpecOps guys training in Florida who died at ambient air temps of 56 degrees F.
In longer term dislocations, you're going to need food, light, transportation, quite possibly electrical power, and medical treatment. Babies and children impart their own set of needs.
Diversification is the key to effective preparedness.
You're going to have to look at storage space, and how to avoid turning your home into a warehouse.
At some point after a dislocating event or series of events, you will need to trade for things you don't have, or can't make yourself. Early on, vices, tobacco, liquor, spices, batteries, and day to day necessities might form the basis of informal trade. The gun guys seem to think any new currency will be based on ammunition, but those guys tend to have large stockpiles of their own. Gold has maintained high values for milennia, but you'll need to make change unless you want to spend an ounce for one roll of TP.
Speaking of TP, you're going to have to look at waste management, and also to the morale of your people. Foul your drinking water with untreated human waste and you have missed the diversication equation by lightyears. Epidemics almost always follow dislocating events.
In a dislocating event's aftermath, your highest risk of injury might come from your own family. Leadership includes much attention to morale, and morale can depend on the smaller luxuries. Back to advance preparation here.
This post is long enough already, so I'll close with additional detail on some of the higher priorities, those that can kill you the fastest.
Security.
Guys who fight for a living use sidearms to break contact, or to get to their rifles. Shotguns may be helpful for the untrained, but in theaters of war, gather dust. Not too shabby for small game, though. The ubiquitous AR-15 uses Nato standard ammunition, and spare parts are easy to come by. The AK-47 variants have a rep for better reliability, at the price of significantly degrades accuracy.
Most battlefield fights are decided by accurate, high volume, aimed fires, not Hollywood style full auto mag dumps. Aimed fire intrinsically implies training, on the range, and you can't begin to know how much you don't know until you seek professional level training offered by firms like EAG Tactical, Magpul, etc.
A secondary, or backup, sidearm in a battle standard caliber, either 9mm or .45 ACP is a solid choice. The smaller size offers you the ability to keep a lower profile (concealed carry) but again, no soldier reaches for his pistol un less his rifle is inop or empty.
Surrounded by growing food, good water, and like minded neighbors, controllable access roads, proficient in security, close enough to major pop centers to obtain the unusual items to meet needs, but far enough away to avoid gangs, desperation, disease and fire is, IMO, the best place to be. Clear lanes of fire out to 300 yards or more makes security threats work to get to you.
Water.
In many areas water is easy to find, but clean drinkable water is not. You can filter, you can treat, or you can boil. Filtering microscopic organisms is comparatively slow, and filters themselves tend to clog. Sand filtration in nested containers can clear cloudy or dirty water at high volumes, but will not address biological of chemical contamination.
Treatment can be via commercial tablets (small, easily portable) or thru standard chlorine bleach, 5-6% sodium hypochlorite, NO perfumes or additives. 8 drops per gallon for clear water, 16 drops per gallon for cloudy. Liquid bleach breaks down over time, and under UV light. Powdered pool bleach lasts longer. Treatment takes more time for colder water. ideally, let the treatment stand 8 hours before consumption. Minimum, 30 minutes.
Boiling uses fuel, not my ideal solution. In Sherwood Forest, maybe. Most pathogens die well below 212 degrees F. Full boil for 5 seconds, done. Unless you run your water heater at 212 degrees now, any more is overkill.
A well with a quality handpump and spare parts will be a gold mine if SHTF. Even if you share water for free, the time you save meeting your own every day needs, will put you ahead of every survival curve you can construct.
Heat.
Firewood looks good near a forest, but you have to cut it, split it, and store it. I expect firewood to go short supply very quickly after major dislocatio (along with the game that lives in wooded areas now.)
NG and propane are good after quakes, less disruption than electrical heat, but re-supply will be a continuing concern. A propane or NG generator will run far longer than gas or diesel, simply because tanks and supply lines are larger.
There is no perfect solution. Perhaps a windmill in the long term, and in the medium term, making the next furnace replacement a geothermal unit will cut uncertainty about as far as possible.
Insulation is "free heat".
One final thought before closing. Dislocating events follow predictable timelines, within finite limits. First a period of rapid, chaotic, and unpredictable change, followed by a longer period of adjustment to a new order of environment. After the chaos, you'll need to adapt to a new world. You will need to sustain yourself and your family and your choices will be limited to what you can make, trade for, or have stockpiled. You need some skills that may be useful in a very different social order than we now enjoy. I expect the risk of further dislocations to be higher after a major disruptive event, not lower. Get off the stockpiled goods, and secure them for long-term storage, as soon as possible, you may really need those things later on down the road.