These databases will lead you to a range of articles on authors, productions, directors, etc. Literature Resource Center is particularly useful for background information on playwrights, overviews of their works (in case you want to know more about the plays you haven't discussed yet in class) and the full text of critical articles.
Search for journal articles on most topics. This multi-disciplinary database is a good place to start if you don't know where else to begin. (EBSCO)
*Redeem a code and create an account using your UR email address to access the New York Times' website. Your account will be active for 26 weeks, after which you will need to repeat the process and redeem the code again. Note: If you have a current paid New York Times subscription, cancel your paid subscription, prior to redeeming the code and registering. Our subscription does NOT contain access to Games or Cooking. Once registered, you will have access to the New York Times articles from 1851-present. For the date range 1923-1980, users are limited to 5 accesses per day. Note: Web-only content is not linked in OneSearch. You must access the website directly for those articles. (New York Times)