My little corner on credit cards
If your balance approaches your credit limit, stop using your credit card at once. If you absolutely must exceed your limit, do everything in your power to pay back until you are under your limit as soon as possible. Many credit card companies will let you go over your limit, but the interest rates they will charge you will be exorbitant, and the fact that you exceeded your balance may be reflected in your credit report. Another essential step is always paying all of your bills on time. This includes not only your student credit card bills, but your utility and rent bills.