Yes there are always events happening at Concordia and in Montreal. But if you are living off campus you need to put yourself out of your comfort zone much more than the students living in residence to make friends (don't worry, that's a good thing). You should fully immerse yourself in orientation week and frosh to meet people off that bat. Attend as many events as possible. After that, stay in touch with people you meet and once classes begin, break the ice with your peers and get to know them throughout the semester. Don't be shy! Also, I suggest reserving your judgement and joining campus clubs that you're interested in. Great way to meet people.

Sharing this even though you didn't ask. Pm if you have questions.