A quick Google search revealed at least 2 studios in the Sudbury, Ontario area that specifically indicate they teach ballroom. Most studios have some kind of introductory program for couples or singles. If I were you I would pick one and try it out.
Try these links and see what they have to offer. Feel free to return here and ask questions.
http://www.zsudbury.ca/ballroom/
http://www.ballroomdancestudios.ca