If you don’t know how to manage credit cards responsibly, you run the risk of making a lot of mistakes with them. For instance, charging up your accounts. The goal is not to spend everything that’s on the card. You should keep a certain amount free.

Another mistake people make is carrying high balances from month to month. Just because you make your minimum payment every month doesn’t mean it’s a good idea. You’ll end up paying way more back in the long run. Not to mention, it runs down your credit score.

Credit cards are convenient and flexible, but it’s also important to learn how to manage cards the right way.