The Australian student visa is necessary. There are some main requirements for any visa: the applicant must prove his ability in term of financial, spending for studying duration, insurance coverage coverage and so on. Be proficient in English is another requirement. If English is the second language from the applicants should pass IELTS.
The simplest way to apply to get a Australian student visa is through the Australian embassy within your country. Should you be in Canada, go to Australian Embassy in Canada or Australian Embassy in Ottawa.