The Great Courses sounds like something I think I will do
I took all my general ed in college and got the well rounded education it provided, but there were some courses I always wish I took but never did: Roman history, psychology, astronomy, a few others. And would be nice to refresh on some other topics.
A good university intro course won’t make you an expert, but at least you’ll be able to talk with an expert without embarrassing yourself.
You might not be surprised I recommend you take micro/macro economics.