Unfortunately, rehabilitating a credit score is not as easy or as quick as its destruction. While delinquencies account for more than a third of your score, there is hope. Implement the steps in the section "Repairing Negative Information on your Credit Report". While solving old debt problems, stay current on your existing debt to have maximum impact for your effort.

Credit utilization is the ratio between your available credit (all of your credit limits) and your total used credit (all of your credit balances). When you divide your balances by your credit limits and multiply by 100%, you should end up with a number under 30%. This represents a “healthy” credit utilization. It also leads to a very high credit score.
Pay off your debt instead of repeatedly transferring it to new accounts. Contact the debt collector listed on your credit report to see if they’d be willing to stop reporting the debt to each major credit bureau (Equifax, Experian, and TransUnion) in exchange for full payment. This technically violates some of the collectors’ agreements with the credit bureaus, so it may be a non-starter, but it never hurts to try.
Reputable credit counseling organizations can advise you on managing your money and debts, help you develop a budget, and offer free educational materials and workshops. Their counselors are certified and trained in the areas of consumer credit, money and debt management, and budgeting. Counselors discuss your entire financial situation with you, and can help you develop a personalized plan to solve your money problems. An initial counseling session typically lasts an hour, with an offer of follow-up sessions.
You could consolidation the loans with a federal Direct Consolidation Loan. The Department of Education will issue you a new loan and use the money to pay off your existing loans. If you include your defaulted loan, that loan will be paid off, and your new consolidation loan will be current. To be eligible, you must agree to either repay the consolidation loan with an income-driven repayment plan or to make three monthly payments on your defaulted loan before applying for consolidation.
A quick Google search yielded this terms and conditions sheet, which may be slightly different than the one you’d receive if you applied for a card. According to the one we found, Credit One charges an annual membership fee from $0 to $99. Credit line minimums are between $300 and $500. So you could be paying $99 for a $300 credit limit. APR is relatively standard, but on the high side, with variable 19.15% to 25.24%. Given the high annual fees, we recommend saving your money and using a secured card with no annual fee to begin rebuilding your credit score.

This is easier said than done, but reducing the amount that you owe is going to be a far more satisfying achievement than improving your credit score. The first thing you need to do is stop using your credit cards. Use your credit report to make a list of all of your accounts and then go online or check recent statements to determine how much you owe on each account and what interest rate they are charging you. Come up with a payment plan that puts most of your available budget for debt payments towards the highest interest cards first, while maintaining minimum payments on your other accounts.
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