Here are a few really good ways to establish good credit:
If you are overextended and a homeowner, do what you can to consolidate your debts.
Pay off all delinquent, past due accounts, judgments, liens, etc. This will not remove the account from your credit report, but it will show you have cleared up past issues and can move forward to establishing good credit. The longer these items remain "unpaid," the longer it will take to establish good credit.
Keep all credit you now have current. This simply means pay all of your house payments, credit cards, automobile loans and any other credit on time!
Get new credit! This can be achieved by getting creditors to extend you new credit opportunities. This can be difficult as most creditors require good credit.
Here are a few really good ways to establish good credit: