Take advantage of the tremendous resource that you have represented by Columbia Business School's NYC alums. Reach out to them for informational calls and visit. When you arrange to speak with or visit an alum, ensure you have made even a small effort to educate yourself on that person’s industry and company, if not them.
Enjoy yourself while you attend school; however, take full advantage of this unique opportunity to interact and develop relationships with the tremendously talented teaching staff as well as your fellow students; you will likely interact with many of them for many years to come.
Lastly, you are fortunate to be attending a top school and have devoted the time and resources to take this next step in your career and development. Ensure you maximize your potential by fully devoting yourself to your studies as well as extra school activities. At the same time, remain fluent in current events, especially as it pertains to the industry you are targeting to work in.