Chetana's Institute of Management and Research

If we looked at the overall rankings of these institutes, Welingkar &get; SIES &get; Dalmia &get; Chetana. So, Welingkar would be your first preference. It is better to join a GDPI training programme as it will give some structure to your preparation and you'll know how to frame your answers to commonly asked interview questions, how to generate points and tackle GDs, and how to face What (writing ability test) and work on your CV/Resume and application. You can start working on these things immediately:
1. If you haven't been following the news, start reading the newspapers right away and go through Current Affairs so far. That will take care of the content in GDs and will also help during interviews if you're asked your opinion on a topic
2. Do institute research. Why do you want to join that particular institute? What kind of activities happens on campus? Talk to people who are currently studying there or have completed courses from that institute
3. Write answers to commonly asked questions. Why MBA, why at this point of time, about your work experience, extra-curricular activities, positions of responsibility, long-term and short-term goals, passion, hobbies and interests, strengths and areas of improvement, etc.
4. Attend a mock interview/GD. It will definitely highlight gaps in your preparation. Hope this helps! All the best :). .