First of all, you should take training classes which are organised by the Associated Locksmiths of America. After completing the required training, you will become a certified locksmith.
This training course will enable you to learn the basics of how to make duplicate keys and all other relevant techniques that will help you to become a good locksmith.
You should get information about the requirements for getting license. There are many states that require applicants to pass a test for getting license. You should check whether your state also follows the same regulations or not.
After getting license, you should find an established bonding company that provides insurance to locksmiths. You can contact to the licensing department of your concerned state and get a list of those companies that provide insurance to locksmiths.
Select a bonding company from the list and fill the form to apply for getting insurance. Fulfil all requirements of the bonding company and they will verify all of your details. You will become a bonded locksmith if the company finds that all of your details are true.
After becoming a bonded locksmith, you should apply for jobs in established companies in locksmithing field. You can start your own business after working a couple of years as an employee.