Build a diverse resume covering Positions of Responsibility, good projects & courses. By doing all this, you would build your communication skills and team player skills which are essential for a corporate world. Also a good resume is a great advantage for you, it would help you in resume shortlisting round and also would give you an edge over others even if you try for off-campus opportunities. Be good with your academics, maintain a decent CGPA. Prepare well for OTs by constantly practicing aptitude from the internet or other books. For Group Discussion, you can have mock GDs with your friends. If you are nervous about your interview, then try to have mock interviews with your seniors or friends.