One cannot really study for preparing for FTII. Most of the time, the questions asked their relate to your observation skills. They actually try to guage your passion for cinema. For eg one of the examinees wanted to be a sound recordist. He was from a small place in Punjab. The examiner asked him about what did he find in the fields of Punjab. The examiner expected to know about what he saw as well as what he heard. The best way is to visit the campus, hang around there, meet students there and get an idea of what they went through. You will also get a feel about the place.