Understanding Creative Commons Licenses
If you use images from the internet, please use images that are Creative Commons Zero (Public Domain), Creative Commons by Attribution (this just means you have to cite the source), or Copyright Free! This means they are free and legal to use!
For information and guidance regarding copyright, fair use, public domain, public performance rights, and getting permission to show a movie at school, see the guides linked below:
University of Florida:
Duquesne University
Swank: Although there is a lot of useful information on this site, note that it promotes only one license issuer; there are several to choose from, each with their own list of studios they represent and corresponding catalog of available films.
BBC Sound Archive - tons of sound effects
Vimeo Free Background Sounds
Used "Advanced search" to apply license filters
Find tons of options for free music
at this awesome guide from BGS University. Be sure to follow all directions and give credit when directed to do so.