Credit card applications now
Most credit card companies will happily let you exceed your limit because the interest rates they can then charge you are exorbitant. Another side effect is that when you exceed your balance, a note may appear in your credit report, which will lower your credit rating. And, of course, always pay all of your bills on time. This includes not only your student credit card bills, but your utility and rent bills. Any bill that is late by a certain number of days (usually 30) can show up on your credit report as a black mark against you.