There are many base level skills that are helpful. Reading, writing, math skills. Learning a language allows you to see the world through a different lens.
I had the great fortune of learning economics from the fantastic Larry Smith at the University of Waterloo.
Microeconomics will teach you the secrets of how businesses run and operate - price elasticity, supply and demand. Macroeconomics will teach you everything you need to know about how nations, central banks, interest rates.
Combine the two and you've got a good understanding of market forces, the basics of an MBA, an ability to reasonably forecast central bank interest rate moves (and saving yourself thousands of dollars in interest).
Not everyone can learn from Larry. But if you want to learn, here's a great place to start.
Marginal Revolution University - https://www.mruniversity.com/