My advice for freshers or 2nd year students ->
1) Dont screw your academics. Trust me, it may not be an indicator of a successful person but still it matters in a cut-throat competitive environment.
2) Be proactive. Participate in debates. Join a club, placement committee.etc. On campus or off-campus.
3 ) A few Teachers are a bit biased towards students who keep dogging them around and end up getting more marks in the internals. Keep a lookout for them. And dont screw your internals thinking ill make it up in the externals out of 70 marks. Also maintain your attendance at 75% . It would be a utter waste not to give the paper because you got debarred.