The most common greeting is the handshake.
It should be firm and accompanied by direct eye contact and a sincere smile.
Wait until invited before using someone's first name although Canadians tend to move to a first-name basis rapidly.
French Canadian friends may greet each other by lightly kissing on the cheeks (once on the left cheek and once on the right).
If using French in Quebec always use the formal pronoun "vous" (you) when speaking to someone and do not switch to the informal "tu" unless invited to do so.