K1 visa from tunisia

This app summarizes all the steps needed to complete the US Fiancé(e) Visa process. Although it focuses on the K-1, Fiancé(e) Visa, it also covers most of what is needed for K-2 and K-3.
Although this app is not an official app of the United States Citizenship and Immigration Services (USCIS) or US Embassy, it will give you some idea of where to go and what you need to do for the process.