Direction

Direction is the most coveted seat at FTII, followed by acting. Compared to the other streams, the ratio of competition is 67 times higher.
If you aspire to become a director, you gotta have a taste for music, sound design, cinematography, editing, acting, art direction, story boarding, screenplay and should intensely feel for them. Direction is like conducting an orchestra or captaining a ship. You do not have to do anything individually. But you must exert great command. And above all, you must be willing to learn these departments and be obsessed with some of them. Hope you are ready!
Honestly, I never prepared a single minute for the entrance test. You best go and be yourself because if you have passion for art and you are a graduate, you know a few things by now.
To qualify for the entrance and the interview, however, this will give you a tremendous start and will come handy as required learning:
Read 5Cs of Cinematography - It is actually about all aspects of filmmaking. A simple and wonderful book.
Watch the movies of Satyajit Ray, Ritwik Ghatak, Akira Kurosawa, Ingmar Bergman, Martin Scorcese.
Look up online. In YouTube, there are several channels on filmmaking and film-analysis. I like 'every frame a painting' a lot.
For the multiple choice questions, brush up on some art and culture information from GK books and newspapers.
Go, ace the test. Cheers!