Get a credit card with a high limit, keep the balance low and use the credit card to establish a credit history or boost a low credit score. Remember — the more available credit on a credit card, the better.
About How to Boost Your FICO Score
Good Credit Scores takes patience and persistence and there are quite a few ways to legitimately give your score a boost when needed. Over the long haul, you'll be rewarded with a solid FICO Score.