Contact the U.S. embassy or consulate in your home country to arrange the required interview with a consular official. Typically, your application is taken at the time of your interview. Ensure that you apply well in advance of the time you intend to travel to the U.S.
Submit the following when you apply for your visa: DS-160 Online Nonimmigrant Visa Electronic Application; a valid passport; one color 2x2 photograph taken within the last 6 months.
Check with U.S. State Department website for information on any necessary fees. The amount of the fees may depend on the policies of your home country.
Check the website of the U.S. embassy or consulate in your country for specific information concerning how long you have to wait to discover if your application was approved.
Show up at the required time for your interview with the consular official with all of your necessary fees and documents.