I live on a farm. continue to grow food, put up electric fences, finally make that flamethrower that I have plans for- not really lol way to innefficient. i would be sustainable and learn things like blacksmithing. I have a supply of books already, since no power, no servers=no web.
Oh, and as in day of the triffids, the government wont send help. every military will be broken down. super markets are OUT. they would be looted in days. even if you still had a whole city of supermarkets to yourself, they would run out.