If you want to understand economics, put money out of your mind. Think, instead, only about goods, such as food, clothing and shelter.
When you are hungry you don’t need money, you need food; when you are cold you don’t need money, you need clothes; when you are exposed to the rain and wind, you don’t need money, you need shelter.
The fundamental puzzle of economics is that goods must be produced before they can be enjoyed. This puzzle is fundamental for the simple reason that people die when the goods they need to stay alive do not exist.
Put out of your mind the idea that wealth consists of having lots of money. It should be obvious that wealth consists of having lots of goods — primarily and especially food, clothing and shelter.