We are planning to get married.How do i go about visa application ?

Hello friends,
I am Carol,  a Malaysian. Im in a relationship with a Canadian. He's from Ontario.  We know each other for 10 months now. He has visited me twice.
We are planning to get married. Im planning to migrate to Canada with my 2 kids. Im a teacher with a private school here.
How do i go about the visa application? What visa do i apply for? How long does the approval take? I have a house here and i am still paying the bank. Will i be able to leave the country while still having a loan in Malaysia. Please advice. Thank you.

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