NIEM Mumbai is a great institute for Event Management. The faculties at the institute are great and they offer good practical training. One of my friends attended the institute and vouched for their PG Event Management course.
With theoretical learning, make sure to participate in freelancing activities that will come your way. These activities can be very beneficial. The more you participate in the events the more contacts you have the chance of getting in touch with. Practical knowledge is more efficient it will go a long way in the improvement of your skills.
Participating in these events is also instrumental in bagging a job and kick-starting your own company.