Surviving the Afterness

The world suddenly ends, civilization is broken up and people are just surviving in little pockets or alone. Communications are down, no Internet. No electrical power but for the odd generator still managing to function. Think about it... how would you carry on? How would you find food, shelter and the other basics for living? Would you stay alone or find a group to pool resources with? What skills do you have that might be just a hobby now but suddenly become valuable in the new way of life?