As an international student, you will need to have specific permits and visas to study in Canada. You should also check to see if your home country will require any further documentation.
Make sure your Study Permit does not expire. You can learn the application process in extending your study permit on the Government of Canada's page. If you have any questions please visit the International Student Centre or you can contact an advisor by emailing email@example.com.
Processing applications for Study Permits and Visas may take several weeks (processing times vary depending on the country). If you receive and Offer of Admission and decide you want to come here, you should not delay in accepting your offer and applying for your Study Permit/ Visa to avoid any problems resulting from lengthy processing times.