Hi,
I live in Europe and i am convinced that a world war will happen within the next 30 years, probably with nuclear weapons. There will be no internet, food, electricity, water available. Banks are closed so i can't get my money. No fuel in fuelstations so i can't use my car. No meds available everything is plundered in pharmacy's. Stores and wallmarts are plundered as well so no food.
What do i need to do to survive?
That's something I think about too.
You need to find a second home in remote areas, like near mountains or somewhere you can easily find underground water.
You can choose to build an underground home like this
https://s-media-cache-ak0.pinimg.com/originals/c0/89/67/c08967dab26fa0f0311b24461763c6f2.jpgOr fully covered with some secret entrance so nobody can find you and your family.
You need really thick walls to avoid radiations from nuclear weapons.
Learn how to store food and liquids. Learn how to handle firearms (yes). Keep your bitcoins. Ancient technology will be important so learn morse code and stuff like that just in case.
There is a lot to discuss, try searching nuclear strike books on internet you should find interesting pdfs
