This is practically the same question as asking if you woke up tomorrow and an EMP had gone off, effectively putting us back to 1718, what would you do? The first thing would be to try to survive the 95% die off of population that would occur because the number of people would be completely unsustainable at that technology level.

The 2nd thing I'd do is kick myself for not doing everything I could to get the government to finally harden the electrical grid and other infrastructure before catastrophe struck.