So, I'm here at my aunts house for a bit, and she has direct TV, and she got a good deal on services yadda yadda yadda... And now my parents are getting services

Problem is HOW DO I USE IT
And what channels are on there?? I'm aware it's an American cable company and my aunt gets American channels...but how do I know what to watch? D: and can I still get canadian channels? The interactive guide on direct TV is so confusing, I don't even know how to get to half the channels. I know Americans have much more channels and shows than us Canadians, as I only get about 300 useable channels right now.

I usually user Rogers cable, anyone who can explain to me the jist of direct TV +rep