There are three main ways to find the articles you need:
Start here for definitions of key terms and background information.
Google Scholar is a good place to look if you can be specific about what you need.
Try searching some of these databases for articles on your subject.
For topics that are not specifically related to journalism, go to All Databases.
Did you miss an episode or series on TV? Well eTV can help as it records and archives TV programs for educational purposes. All you need to do is log in, then search for what takes your fancy to watch online.