Where should I apply? 17 years old with no job experience?

Hi where should I apply for a job. I am pretty good with computers (how they work, hardware, software, etc.) Ill be going to university for information technology next year. I have done a lot of volunteer work at places like the salvation army, long term care center, my elementary school and high school, and I had a paper job when I was 13 or so. I am kind of picky in terms of finding a job. I dont want to work at any fast food place. I love electronics or sports. Is there a possibility that I get hired from Futureshop? or Canadian Tire? I really need a job to pay for university and personal expenses. Any help would be appreciated:D