How do I connect outdoor security camera to a power source?
Power cord method


Have an electrician install a power receptacle within cord's reach of the camera
Route cord from camera to receptacke
Plug cord into camera
Plug power block into receptacle


Extension power cord method


Get a 12VDC extension cable with the right ends on it.   
Run the extension cable with the ethernet cable, follow rules for Class II low voltage wiring
At the hub/switch end of the ethernet run, plug factory power block cable into extension cable
Plug power block into wall


PoE method (Power on Ethernet)


Return these/sell on Craigslist and get PoE cameras, or, get PoE extractors for this camera. 
Run just ethernet cable to your router/hub. 
Install PoE switch/hub as extension of, or to replace, your router
Plug ethernet cable into PoE hub