On Quebec Tuition:
Not sure how long the OP has lived in Canada, but people who have lived less than 3 months in Canada (outside Quebec) then go to Quebec for university qualify as Quebec residents for tuition purposes.
The above situation is commonly referred to as "Returning Canadian/Canadian born abroad"
Tuition Costs:
Assuming Quebec:
With Ancillary costs tuition works out to around 4k/year.
Outside Quebec tuition:
6-8k/year depending on the school. The more reputed ones are somewhere between 7-8k.
Room and Board:
Living expenses depend on the school but on-campus I would say around 12-15k for room and board.
Costs will probably drop in your second year if you decide to move off campus. (at least in Quebec with its decent housing costs, Toronto is pretty expensive for housing.)
Other Costs:
Of course budget another $100/month for public transport and a phone plan.
At least $50 a week for beer money/entertainment/eating out. Costs in this aspect can vary considerably depending on how much you would like to eat out/party.
Assuming you don't drink/party then the costs will of course be lower. If you drink/party a lot then the costs will be considerably higher. There is a alcohol monopoly in Canada that makes the costs high. (except in Quebec where the monopoly doesn't apply to beer and wine and thus reduces the cost.) Don't expect any of the 50-cent beers available in Europe. Also, the cost of those late-night poutines and pizza slices can add up quickly.
Of course if you're eating out a lot it means you're eating in campus less so choose your meal plans wisely and also check if the school allows you to carry over meal plan dollars to the second year. (I know McGill does this.)
On Employment:
Maybe look at getting a job. You can work part time, a few hours a week, and make more than enough money to live a good life assuming your parents cover tuition, room, and board.
Even 10 hours a week of working in a job that paying $10-15 an how equates to $100-150 a week, more than enough to not worry about running short on cash. (Lot of unis even have on campus jobs.) Alternatively, you can also tutor some kid in middle/high school for probably at least $20 an hour a few hours a week if a McJob is not your thing.
Oh, and the great thing about being a Permanent Resident? No need to get a work permit!
Of course if your parents are willing to cover everything then there is no need to work.
A note on Bilingualism:
If you go to Quebec, be prepared to learn French if you want to get a job. You can probably get a job knowing English but knowing French will increase opportunities by a lot. The same goes for internships. You can get by with just English, but knowing French will give more opportunities. (Imagine you're in a bar and there is a beautiful women (or man) that only speaks French. You'd wish you could speak French, wouldn't you?)
Also keep in mind that Canada is after all a bilingual nation so if you do end up studying in Quebec definitely take the opportunity to learn French. It is an asset that will most definitely help you later on in life.
On Scholarships and Financial Aid:
If you're really good academically, you will most probably get an entrance scholarship valued at around at least 4-5 k depending on the uni. It's only good for the first year but can offset the increased costs of living on campus.
If you're really good academically and have some really good extra curricular activities you can also get renewable scholarships that can easily surpass 10k/year. (and are good for all 4 years.)
Aside from merit scholarships there is of course the usual need based financial aid package of bursaries and loans which you can get depending on how much your parents make.
On British Columbia and Necessary Documentation:
For some stupid reason, British Columbia only accepts a valid PR card to get health insurance and a Driver's license. If you ask for an official determination at the border, this won't be a problem. but If you don't ask for an official determination then don't study in British Columbia. In the other Canadian provinces your Confirmation of Permanent Residence document with your passport will suffice for a health card and Driver's license.
The main documents you need for your day to day life is a Driver's license or photo card, a health card, and a Social Insurance number. (only needed to work.)
Documents you must bring to Canada is at minimum your birth certificate and passport, but you will not use this on a daily basis once you have your necessary Canadian documentation.
Unlike many countries Canada does not have a National ID system, so your driver's license functions as a de facto ID.
