This video from Henrik Kniberg is “basically a 1 day product ownership course compressed into 15 minute animated presentation. There’s obviously more to product ownership than this, so see this is a high level summary.”

I find it to be an excellent overview of Agile for everyone, not just Product Owners. I will often show it during the lunch break of a 1- or 2-day Agile/Scrum fundamentals course.