12. Stay away from convenience checks and cash withdrawals
Don’t use your credit card randomly for cash withdrawals. Think twice before you do something like this, as this can prove to be disadvantageous for you in the long run. When you buy something using your credit card, you are not directly charged with an interest. Interest rates are introduced only in the next billing cycle. However, when you withdraw cash using your credit card, you are right away charged with a fee equal to 2 to 4 percent.