What you should do

Pay your credit card regularly. Some people think that it is okay to transfer balance from a month to the other, but it isn’t. The payment due date assigned to your card is your deadline. Pay out your balance, or pay the most you can, monthly, just like you pay rent.
 
Pay your balance on payment due date. Review the terms from your credit card, but as a general rule, pay your balance on due date, or a little earlier if possible; so you can enjoy a few days of free interest, in other words, not incurring interest charges.
 
If you have problems, call the issuer company. For example, if your account statement is delivered late, or if you know ahead that you won’t be able to pay your balance on time, call them to make payment arrangements. Check your account to find details on how to communicate with your issuer in case you have questions or problems.
 
If you plan on transferring your balance from month to month, find a low interest rate card. Learn to select a card, and make sure you understand the impact of compound interest (the amount charged in interest, plus purchases, plus unpaid interest form previous months).

What you shouldn’t do
 
Use your credit card as a second income. Don’t purchase things you can’t afford.
 
Postpone your payment when you are close or past the due date. Payments are processed on the day they are received, not on the date you sent them. 
 
Don’t be ashamed of seeking payment arrangements if you are going through financial difficulties. The longer you ignore unpaid bills, the worse they get. Call your card issuer to make a payment plan, or if your case is worse than that, visit a credit adviser.