As mentioned before, carrying a balance on your credit card is not recommended to beginners as they can easily lose track of the situation and get themselves under a mounting debt. It takes understanding to know how credit card companies treat balances, cash on advance, installment payments etc. Usually if you feel that you will be able to make more than the minimum due on your credit card balance, then you will gradually reduce your debt over the next few months.
What many people fail to understand is that when you just pay the minimum due, you are only paying the interest and the financial charges, while the entire principal amount will remain unchanged. You can make the minimum payments for months and not be any closer to paying off your debt. So always pay more than the minimum due. Before you decide to revolve a balance, plan out how you are going to do it. Calculate the money that you are going to pay in interest and then if it seems feasible and worthwhile to revolve the balance for the convenience of having to pay in smaller installments, then by all means revolve the balance.
If you are in any doubt about how the credit card company will charge you interest, always call them up and ask them for help. By giving them the exact figures about how much you want to spend and how long you want to revolve the balance, they can usually give you the exact figures for the extra interest that you will have to pay and the minimum payment that you will require to make every month. This goes a long way in helping you organize your finances beforehand.