Understandably, you don't know something until you've been taught or experienced it.
That's why this list will provide things you should never do with your money. That way, you can avoid making the same mistakes countless others have made.
Don't spend money you don't have
If you can't pay for something in cash, you likely can't afford it, whether it's household essentials or something else. Period.
On the other hand, investing is all about putting your money into something with the expectation of a return on your investment. Of course, some risk is involved, but it's usually much less than gambling.