Okay I can answer those, they are easy questions:
- Along with the passport you get a paper called COPR. It's sort of a record of landing paper. All you need to do is come to Canada, and any border agent (at airport or at border crossing) will fill up your COPR paper, and let you into the country. Border agent are present 24/7 at borders and airport, they are the ones who need to catch the mexicans who are jumping the fence, so that's why they are always there.
- After that you need to apply for a PR card, it's usually easy, you just go whenever you want to an immigration office and apply, there is info on that somewhere on the cic website.
My 15 days are due first week of june