Credit cards have become an important part of our financial transactions today. They can help us pay for things when we don’t have money to buy them immediately. They give us the liberty to pay for things later. But is it always a win-win situation for us as far as credit cards are concerned? How do credit cards work? And how do the issuers of credit cards, who pay on our behalf, earn profit from them? Also, what are the things that you should keep in mind while getting a credit card?