Hi rahulzlpr,
This is essentially a list of commonly-used books, but many Test Takers who take a 'book-heavy' study approach end up getting 'stuck' at a particular score level. That may or may not happen to you, but we won't know until you get a bit further into your studies.
Since it sounds like you're just beginning your studies, then it would be a good idea to take a FULL-LENGTH practice CAT Test; you can download 2 for free from
www.mba.com (and they come with some additional practice materials). If you want to do a little studying first, so that you can familiarize yourself with the basic content and question types, then that's okay - but you shouldn't wait too long to take that initial CAT. That score will give us a good sense of your natural strengths and weaknesses and will help provide a basis for comparison as you continue to study. A FULL CAT takes about 4 hours to complete, so make sure that you've set aside enough time to take it in one sitting. Once you have those scores, you should report back here and we can come up with a study plan.
1) Have you scheduled your Official GMAT yet?
2) When are you planning to apply to Business School?
GMAT assassins aren't born, they're made,
Rich