A great starting point for someone who is just getting started on a preparedness journey is prepping specifically for a two-week power outage. If you can comfortably survive for two weeks without electricity, you will be in a far better position than most of the people in North America.
Even if you aren't convinced that hardcore preparedness is for you, it would still be difficult to argue against the possibility of a disaster lasting for a couple of weeks. Major natural disasters like Hurricane Sandy down to lesser storms like last year's derecho in the Metro DC area are incontestable – storms happen and all you can do is be ready to weather them. As well, a large western US power company recently announced that they did not foresee the ability to keep up with electrical demand this summer, and may institute rolling blackouts to cope with it. If you are prepared for two weeks without power, you are prepared for a wide range of short-term emergencies, including quarantines, interruptions of income, or civil unrest.