Need some help for my TATA INSTITUTE OF SOCIAL SCIENCES entrance and GD and PI???

iv jus rcv my letter to appear for the entrance xam and GD at TISS....have no clue as to how to go bout it!!cud neone help me out on this???lik i need to kno wt kind of topics shd i prepare for the entrance and the GD??iv applied for MASTERS IN SOCIAL WORK...plzzzz help!