You will need a good knife,fire lighting equipment an army flint.
There are many books around today a good one is the sas survival book only tiny you can pop in your pocket.
Shows plants for healing, what you can eat etc.
Food will be scarce you will have to go back to basics it will be hard for some.
get experiences from the older generation those of us who have been through wars they have good tips.
Wear clothes in layers to keep warm!
As possible a weapon of sorts maybe sling shot! because although i am not a violent person it will be the the survival of the fittest or pure strength.
