Hi Vakru,
About 4 weeks ago, you posted that you had scored 580 on your initial practice CAT and that your Score Goal was 700+. With this post, you're clearly looking for additional study materials, but it's not clear how you've been studying since your first post. Before I can offer you the specific advice that you’re looking for, it would help if you could provide a bit more information on how you've been studying and your goals:
Studies:
1) What study materials have you used so far?
2) Have you taken any additional practice CATs/mocks? How have you scored on EACH of your CATs (including the Quant and Verbal Scaled Scores for EACH)?
Goals:
3) When are you planning to apply to Business School?
4) What Schools are you planning to apply to?
GMAT assassins aren't born, they're made,
Rich