Thanks for chiming in, Sunil.
I agree that taking a practice test is a good place to start. You can sign up for a free practice test with almost any company (including MGMAT!). That will give you an idea of your starting point.
You should also do some research into the schools to which you want to apply. What kinds of scores do you need to be competitive at that school?
If you sign up for a free practice test with us, you'll also get a free copy of our e-book The GMAT Uncovered. That will give you a bunch of good ideas about how to get started and what to think about.
The other good news for you (and as Sunil mentioned): yesterday, we just published a new book called Foundations of Verbal! (And we also have another book called Foundations of Math, if you need that.) I would start with the practice test and get the Foundations of Verbal book, then decide (based on the practice test) whether you need the Foundations of Math book as well or whether you can go straight to the "regular" math Strategy Guides.
If you'd like help making decisions about these things after taking your practice test, do two things:
(1) use the below article to analyze that test, and
(2) come back here and share your analysis with us, and we'll help you decide what to do!
http://www.beatthegmat.com/mba/2011/02/ ... sts-part-1You also may need to decide whether you want to work on your own, take a class, or work with a tutor - I'm not sure from your post whether you've already decide that. This article can help you to decide:
http://www.beatthegmat.com/mba/2010/06/ ... s-or-tutor