Network like crazy, not just on your campus but across campus'. Single best thing that'll come out of the 2 years = people you build bonds with.
Go and attend intercollegiate fests if they are still a thing. Participate in whatever floats your boat. Easy platform for in person networking.
Experiment. Most folks join with an outcome of the MBA in mind and after the first trimester realise that they like something else. So be open to experiences and mould your path accordingly.
eg. When I went in I thought I'd focus on getting into a large MNC FMCG, but realised quickly that FMCG sales is not for me. The focus then took a different path.