Mistake No. 8: Not reading the fine print regarding purchases vs. transfers
Once you get a 0% introductory APR credit card and transfer a balance to it, you might start charging other items to the card.
Be careful, because they don’t all work the same: Some 0% introductory APR credit cards will charge you 0% interest on both purchases and transfers, but others will only apply the 0% rate to one or the other. Be sure you know what a given card will do. If the 0% only applies to balances transferred, you might not want to charge anything else on the card. If it only applies to purchases, then the card won’t be much help in paying down existing balances owed.