Hi Doni,
According Vienna office's webpage (
Who should apply for a study permit), your friend doesn't need a study permit if s/he plan to take a course that lasts six months or less. (However, s/he might need
a temporary resident visa (tourist visa)... it depending on your friend's country of citizenship.)
Otherwise, s/he need a study permit.
As for a study permit, your friend have to submit at least documents on
IMM 5483 and
APPLICATION FOR A STUDY PERMIT – CHECKLIST provided by the Embassy of Canada to Austria.
I think Vienna office's
Studying in Canada: Study permits probably help your friend.
If your friend is a citizen of, and resident in, any of the following countries, s/he may be able to apply for your study permit online :
Australia, Barbados, Denmark, Finland, Germany, Iceland, Italy, Japan, New Zealand, Norway, Republic of Ireland, Sweden, United Kingdom of Great Britain and Northern Ireland, United States of America and Puerto Rico (USA)
It's the way of getting the permit faster. See
Apply for a Study Permit (from outside Canada) for more details.
The Embassy of Canada to Austria will provide your friend a letter(s), and the officer in the border will issue the visa to your friend.
I think it's better that show the officer a ticket of your friend's return flight with other necessary documents.
P.S.
International Students' threads may be helpful...?
@ Friends whose office isn't Vienna,
Almost all links in this post are referring to Vienna office's website. Don't read