immigration to Canada through teaching related course

respected sir/madam,
i have been teaching the students of secondary level since last five years.i have done my masters in political science and then bachelors in education. i am really interested in doing a course related to teaching and enhancing my qualification.Also i want to migrate to Canada.
please guide me for the following:
1)if i take up a course related to teaching in Canada then are there any possibilities for migrating to Australia.
2)what should be the duration of course ,which you recommend, that i should undertake,which may increase my chances for immigration .
3)can you suggest me any course related to teaching that i should undertake.
4)what can be the way(s),in my case, by which i can get immigration to Canada.
please help me out.
thank you.