Yesterday, people who subscribe to the Practical Ed Tech newsletter received a copy of my guide to finding copyright-friendly media for use in classroom projects. The guide includes explanations of Public Domain, Creative Commons, and Fair Use. In the section on using self-created media I included an example of how I unintentionally committed a copyright violation when making a screencast video a few years ago. Finally, the guide includes 21 places to find copyright-friendly media to use in classroom projects. You can access the guide here as a Google Doc or here as a PDF.
Some of the resources featured in this guide are integral to my upcoming course Video Projects for Every Classroom.