There are a few true necessities in life.
First you need food and shelter, then you need to learn about money, according to billionaire Ray Dalio, founder of one of the world's largest hedge funds, Bridgewater Associates.
Understanding money can give you security and the ability to help others, said Dalio.
Check out this video to learn the three things he said everyone needs to know about their cash.
Disclosure: NBCUniversal and Comcast Ventures are investors in Acorns.