Film marketing and distribution is a complex job. Most of the film marketing people are educated but lack experience. This is one of the reasons for today’s crisis in the industry. Since you are clear on your interest, you would build up your knowledge on film exhibition (theatres) and distribution. Understand the different territories and their requirements. These days there are hardly any exclusive distribution companies. You may want to try and work with companies like Shringar films. They have business in distribution and exhibition else try a job with corporates like UTV, Eros, Indian films etc. To understand this well, it will be essential that get your hands dirty and seeing the entire process of the chain.