What happens when I order it from Apple.com/ca?

I'm thinking of buying the iPhone 5s from the apple store (for canada), because I don't want the 2 year agreement. Since it's more expensive though, what happens when it arrives? How will I set up my phone plan from a provider?

I also have an apple ipad i had brought it from canada too. I know its very expensive but its easy tobuy it online. Its just like buying other things online… Simple
you can setup your phone very easily by mail with the provider

You insert your own SIM from whatever carrier & go from there.

What you are doing there's buying the phone unlocked directly from Apple.