Here is how to wire a GFCI Receptacle.

Here is a good example of how a GFCI receptacle should be wired. Any additional outlets wired after the GFCI will be protected as well because the GFCI is first in line from the feed. I had an AC outlet in a bedroom that did not have power once, so I went to the main breaker panel and all breakers were still on. I went to the bathroom that was next to the bedroom to check the button in the center of the GFCI receptacle. Sure enough the receptacle had been tripped. I pushed the reset button and the bedroom AC outlet was active again. With that said it confirms the AC receptacle in the bedroom is being fed from the GFCI and is protected by the GFCI. However if you have to many AC receptacles being fed from the GFCI and have items such as lamps, tv's, stereos, vacuum cleaners, etc. connected then you can easily exceed the allowed amps and the GFCI will trip.