The first but not last decision is to "STAY OR LEAVE" at the place you are when the apocalypse starts.
STAYING- To stay would mean to barricade and have a base
LEAVING- To leave would mean to pack your things and go
It is always safer to move with a group so here is my rule
IF YOUR ALONE STAY, IF YOUR IN A GROUP LEAVE FIND SOMEWHERE BETTER
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Zombie Apocalypse Survival Handbook
RandomA handbook to survive the zombie apocalypse