To complete your name change, you'll need to tell others about it. Contact the people and institutions you deal with and ask what type of documentation they require to make your name change official in their records. Different institutions may have very different rules. Some may need only your phone call, others may require special forms or a certified copy of the Name Change Decree.
It's generally recommended that you first acquire a driver's license, then a Social Security card in your new name. Once you have those pieces of identification, it's usually fairly simple to acquire others or have records changed to reflect your new name.
Finally, remember to change your name on other important legal papers. For example, powers of attorney, living wills, trusts and contracts.
Who to Notify
Here are some of the people and institutions to notify of your name change:
Friends and family
Department of Motor Vehicles
Social Security Administration
Department of Records or Vital Statistics (issuers of birth certificates)