I just received the first letter from the consulate last week. But it's not a notice letter for File No. It's a letter to request an interview on Dec.1. It's very strange to me because I mailed the application in the end of May this year. Anyway, I am very happy but also very nervous. Is there somebody here who has this kind of interview experience? What kind of questions the officer will ask? Is there some good website to look? Honestly I have no any idea about this. Your answers, hints and any ideas will be very appreciated.