Sorry for the delay. I do not have a personal copy of the book, but i had borrowed it for a couple of days from a friend of mine. I didn't manage to cover much, but the book is a must if you are looking to truly MASTER the GMAT. You can score 720-740 without the book, but I feel the book could make the difference between a 720 and say, a 770.
Allow me to quote from one of my favourite beat-the-gmat posts:
manuka wrote:Sentence Correction: Doing Grammar, by Max Morenberg, and MGMAT. I could not have used one without the other. The first one taught me grammar like nothing I have seen before, the second how to apply that knowledge on the gmat. Using only MGMAT might leave you vulnerable at the highest level, where they seem to consciously pick on tricks and common rules (I got one question like this, where you are tempted based on a basic rule, but where some overriding principle lets you go with a better choice). But don't get me wrong, MGMAT is a great source too. In fact, using only the grammar book doesn't give you the sharpness to catch errors that you get from MGMAT. I used OG 12 and the purple verbal book for question practice. Key to good verbal is getting SC down to about 1min per question so you can spend the additional time on CR and potentially RC. If you really learn your grammar, this is probably the easiest part of the test.
https://www.beatthegmat.com/scored-780-t ... 44339.html