yes u can talk on ps3 online and yes u use a wireless ps3 controller and im sure its only 1 bluetooth headset but that's good enough. and all you have to do to connect the ps3 controller to the ps3 is press the ps button in the center of the controller and if that doesn't work
your controller probably needs to be charged connect the usb cable to your controller and then into your ps3 and then press the ps button.