Having found out your eligibility, you are to proceed to an online Visa application. It is retrieved through the Consular Electronic Application Center (CEAC) website of the United States Department of State.
Except the visa application form, you need to collect and submit a number of supporting documents showing that you are eligible.
When the complete set of required documents is submitted, the visa fee must be paid. The cost is determined by the type of visa
You shall have to book an appointment for a visa interview at an American embassy or consulate in person, after a successful submission of an application.
The consular officer will decide on the visa application after the interview.