A secured credit card is the absolute best way to rebuild credit or establish credit when you don’t have any.
Using the report card analogy, if you wanted to bring up your GPA you would need to earn some better grades to do it. It is the same with your credit report. If you want to bring your score up you need to start having new and good credit reported about you.
The best way to do this is to get and use a secured credit card. In fact get two different ones. I put together a section of the site that lists reviews for secured cards. Look at the secured cards here.
The advantage of getting a secured card is that you will get the credit card and not get a rejection on your credit report that will further hurt your credit. A rejection can be easily spotted by looking at the inquiry section of your credit report and seeing there is not a corresponding card opened. And with your current bad credit, if you applied for an unsecured card, you would get rejected.
The reason you will get the secured credit card on the first attempt is because you need to put up a deposit with the bank that is equal to your credit limit. The deposit will earn you interest and in the unfortunate event you were unable to pay your card and defaulted, the bank would use your deposit to pay the debt.
When looking for a secured card you want one that will report to all three credit bureaus. This is key. We need your new good payment history reported.
Now when I say use the card, you do not need to carry a balance from month to month. Just use the card for regular purchases and pay the card off either immediately or at the end of the month.
Also, if you get a secured card with a $300 limit, never have more than 35% of the limit on the card. Even though your initial limits may be low, you don’t want to max them out. You can always increase your limits by increasing your deposits. You can increase your credit limit by increasing your deposit with the card company.
I suggest getting more than one card so you can get as much good juice flowing to your credit report without having too many credit cards open. You could actually go with three if you wanted to, but no more than that.