so if you visit mcmaster's site and see all the available places for off campus residences, set up meetings to go see the houses/buildings that you are interested in (obviously if you aren't from around mcmaster try to make them on the same day/weekend). If you find a place that you are interested in renting then make sure to ask for the contract and look through it and, if necessary, modify it with the landlord. When you are ready to make your decision contact the landlord and sign for it! They'll let you know when you can move in and your responsibilities as a renter. It was very easy
the only hard part is picking the place you want to live!