For a formal legal procedure, you can go to county court and make the name change. The procedure may vary a bit, but normally you make the application with documents showing your existing name and the name intend to use. Then you will be told to make a public notice in a designated newspaper for a public annoucement. After certain days, the court will mail you the legal certification. This process takes about 3 weeks, and you probabily spend a morning in applications.
Once the name is legally changed, you will be known for the new identity.
Once the name is legally changed, you will be known for the new identity.