One of the fantastic things about living in the Internet era is that there is a breadth and depth of high quality, freely available educational content available to everyone.
In a world where what you know and exposure to new ideas and ways of thinking is a competitive and economic advantage, taking time out of your day to learn something new is time well spent.
I believe everyone should have a basic understanding of macroeconomics - interest rates, the debt cycles, GDP growth, productivity. Having a decent understanding of these principles has allowed me to optimize my investments and debt and saved me tens of thousands of dollars over the years.
Ray Dalio, one of the world's foremost investors, delivers a masterclass on Economic theory in a short 30 minutes. Even if you already understand these principles, this is time well spent.