My friend is a senior at IIM Indore for the same course. As a senior, he has the following pieces of advice and recommendations for his juniors.

• Spend quality time with your family and friends before joining. Do things you have been willing to do for a long time but couldn't. This is because once you begin your hectic life here, you won't get time for anything else.
• Refrain from being a part of any clubs and fests in the initial year. Rather focus more on academics.
• Your peers will be from diverse backgrounds. Some may find it difficult to interact with them. It's okay if you don't befriend them just don't look down on anyone. Everyone here is a genius who has made it into an IIM after many struggles. On the brighter side, peers from all over the country add to the experience and fun.
• Try to make the most out of the library of the institution. You have a prior subscription included in your fees so you are free to explore the huge variety of books here.
• Read the IPM Manual given in the orientation thoroughly.
• Inculcate some extra skills like Excel or typing that might come handy in the future.
• Don't hesitate from approaching the professors for any kind of doubts. They are very humble and cooperative.
• Seek help from our seniors as they are more than ready to help in any situation.
• Last and most important, learn basic E-mail writing etiquette before the actual program begins. This will save you from embarrassing yourself in the future.

All these points will help you avoid some major blunders committed by seniors. But remember everyone makes mistakes in their college life. What matters is how you tackle it and what you learn from it.