Citizens of certain countries and territories need a visa to visit or transit Canada. To find out if you need it, just go to this link and choose your country: http://www.cic.gc.ca/english/visit/visas.asp
If you are a visitor in Canada you are allow to study for less than 6 months without a Study Permit. Take a look to the ESL Schools (link) we work with and improve your English while visiting Canada.
For more information: firstname.lastname@example.org