While you are sitting in the comfort of your own home thinking about how to survive a crisis, do not overlook computer security. Even in a worst case scenario that includes an EMP attack, two small USB drives can still provide you with valuable information on everything from farming to preparing meals or hunting for food.
By the same token, taking the time now to secure private, web based communications channels can also make it easier to stay in contact with family members or other survivors that are of interest to you. Do not be fooled into thinking that a computer will be useless in a crisis. If you have power, information, and a working device, it just makes sense to do everything possible to use them as efficiently as possible.