Hi cynthia.madden@simivalleyusd.org,
When it comes to Youtube, it's pretty easy! Just open up the assignment you want edited, highlight where the youtube video was, and then use the delete button to erase and then save the assignment. Should you want to add a new one, it might help to check out this guide for the various ways you can do it: https://community.canvaslms.com/docs/DOC-10367-415241508
