The best way to start building a positive credit profile is to add some new accounts to your credit report if you do not have any credit history or if you have very little credit history. Also, if you have good amount of existing credit already, then it is good to make sure all of your positive accounts are reported to all three credit bureaus.
The following are some addition always to assist consumers with very little credit or a thin credit file:

•Get some credit or charge cards if you don't have any (but only get as many as your budget can handle)
•Apply for a secured card (when you are unable to obtain a account without    collateral)
•Get department store and Gas cards
•Get an Installment Loan (only if you need the service or product)
•Consider a Cosigner (such as a parent or loved one that currently has good  credit)
•Make sure your credit limits are correct