Always read the small print of any agreement to see if there are any hidden charges or conditions you were unaware of.
If you have no credit rating, or a poor credit history it might be difficult obtaining a credit card but if you look through these pages you may find you a card company that will help you.
If you can't pay off your credit card each month you should consider making as big a payment as possible as this will cut down on interest charges.
It's reckoned that over £1m pounds a day is lost on credit card fraud, so take every precaution to ensure that you keep your credit card details safe.