My outlets aren't working.
First, test various outlets to rule out a problem with your appliance. If you're having issues with a GCFI outlet, pushing the test button on the bottom will allow the reset button to pop back up. Hit this button to reset the circuit.
I have no power in my home.
If the entire property loses power, locate your home's breaker box. Reset the breaker to see if power is restored. If you're still having problems, determine whether you're the only home impacted on your street. Temporary outages may occur due to inclement weather, for example, often knocking out power for entire neighborhoods.
If all else fails, contact your utility company for assistance.