Beware of totally online courses. Online is fine if it covers those areas that are best served by distance learning pedagogy. But as you want to get into the classroom face to face you should train at least partly face to face. I would personally recommend TESOL. Check out this site in the UK for more info, especially the CERT (TESOL) it will inform you of what's expected even though you live in Canada: http://www.trinitycollege.co.uk/index.cfm?fuseaction=tesol_certificate.home

Regards

Brian (Finland)