If you plan on entering Canada or visiting Canada for an extended period of time, you'll need a Canadian Temporary Resident Visa, and to fill out an application for a temporary resident visa to visit Canada. This is issued by the Canadian government's visa office, which is a department under the purview of Citizenship and Immigration Canada. The temporary resident visa for Canada will allow you to enter Canada as a student, temporary worker, or a visitor. Applying for it can be tough, though, so it's best to be very prepared!
