When I was employed our security team mandated that we all take a guided online course once a year with animated videos, quizzes, and written descriptions of basic security concepts and how to keep yourself safe. Though it was annoying and time consuming at the time, especially for someone who already knew this stuff, in retrospect I think it would be helpful for someone who doesn't have a background in IT or Security.

Does anything like that exist at the consumer level for low or (ideally) no cost? Something my increasingly attention deficited elderly parents could take and actually get through in a reasonable time frame if I keep tabs on them?

As of right now they've been good about keep their eyes open for scams, and they'll call me if they are suspicious of something, but I'm getting increasingly worried as they get older, and I want them to be armed against whatever is already out there or what's coming next.

I've already been thinking about developing my own course just for them, but I figure I could piggyback off of something else if it already exists.