Department of State will walk you through what the application looks like and the type of information you will need to provide. This sample application provided by the U.S. To complete your online application, you will need your National Visa Center (NVC) case number and Invoice identification number, which you can find in the communication you received from NVC. You must pay all required fees and submit requested financial support documents before you can access the DS-260 application. It is submitted online via the Consular Electronic Application Center (CEAC) website, which makes processing your application easier and more convenient. This form replaces the previous paper form, DS-230.
If you are applying for a permanent resident card outside of the United States, you will have to fill out form DS-260 (Immigrant Visa and Alien Registration Application).