Hi Akashyap13,
Since it sounds like you're just starting out, it's important to define your timeline and plans so that you can study effectively. You've already defined your score goal (720+), so I'ld like to know a bit more about your goals:
1) When are you planning to apply to Business School?
2) Do you know which Schools you're planning to apply to?
Regardless of how you plan to study for the GMAT, it's a good idea to take an initial FULL-LENGTH practice CAT test, so that we can get a sense of your strengths and weaknesses. You can download 2 free practice Tests (and some free practice problems) from
www.mba.com. A FULL CAT takes about 4 hours to complete, so make sure that you've set aside enough time to take the Test in one sitting. You might want to do a little bit of prep work before you take that CAT, but it's not a requirement.
Once you have those scores, you should report back here and then we can put together a study plan.
GMAT assassins aren't born, they're made,
Rich