Best resource--get a copy of the Sunday Chapel Hill News real estate section--their classifieds combined with a separate classified paper (called "The Advocate") some years ago. There are roommate as well as separate apartment listings. Many older houses in CH have small apartments built in and these can be very reasonable and a good choice. They're usually advertised in the paper, although some real estate agents in town manage these as well. The Daily Tar Heel (student newspaper) has rental listings as well. Craigslist is another good option.