When conducting research and writing papers, copyright isn't usually a concern (with the exception of images). However, correct attribution and academic honesty are critical in your coursework.
In addition to QuickSearch and library databases, here are a few additional resourses to help you.
Library Resources
External Resources
Use the Licenses link, for example:
Videos and Images
More detail about finding and using videos and images.
Best practices for using a legal copy:
Copyright Basics
Is the work copyrighted?