. Kijiji seems to be the best, I looked at the off-campus housing and found it was a lot of the same ads that were on kijiji.
I got my place in July before the academic year started, there were lots available before that, and lots available after. There is still lots of for rent signs around town. Just look for the place that best works for you and go for it.
Any additional advice would be to get a place closer to campus, the commute seems like forever when you're in exam time. I would recommend staying away from the downtown area, it is nice and lively-- just a little too lively. There is a lot of housing north of campus that seems to be popular with older 1Ls (as in they enjoy quiet 1Ls). I made the mistake of living downtown and I regret it with all the constant noise from undergrads getting wild almost every night of the week
Hope this helps and I look forward to meeting you next year! If you have any other questions let me know!