Interested in discovering what films you can get your hands on at Princeton? Consult this guide to find films using the library catalog. If PUL doesn't own a film, suggest a purchase or attempt to get via Borrow Direct or Interlibrary Loan (see Library Services menu on main library website).
Princeton also subscribes to a handful of video streaming resources: do a search for video at the DATABASES search.
If interested in finding or using data, consult the Data & Statistical Sources website, a unit in Firestone Library that provides specialized services.
Interested in using or analyzing social media? This guide from Northwestern University provides many resources related to doing research on/with social media. Tips for finding and evaluating primary source materials can be found here.
The Chicago Manual of Style does a good job of providing examples of citing different kinds of social media platforms.
The relatively new online version of MLA available via link in the middle of this page provides guidance in a few different sections:
Types of social media (be strategic in what you choose to work on/with, not random):