There are several ways to go about it.
Here's most of the stuff you will need to know
http://www.itabc.ca/sites/default/fi...ugust-2012.pdf
Pre-apprenticeship -> Apprenticeship 2, 3, 4 -> Journeyman
Get hired as a "helper" by electrical company -> Apprenticeship 1, 2, 3, 4 -> Journeyman
You need 6000 hours total to complete your apprenticeship. It goes by fast, when I finished I was way over with 9000 hours.
Some people can choose to challenge the whole trade after having maybe 1st year and a bunch of work experience, but I wouldn't do that.
After you get your ticket you can always branch off and specialize in something.
In Vancouver, for residential I would say the wages are not great but there is a lot of work.
If you go out into the oil patches or a rig as an industrial electrician, I hear you can pull about 80-100k per year because of all of the overtime 2 weeks nonstop 12 hour days. (I am currently interested in these kinds of jobs and wouldn't mind redoing some of my apprenticeship to also get an industrial ticket for this as I am still young)