If you can stick to your study schedule diligently, 2 months is more than enough to improve your score.
First try to get your basics right and then start working on your speed.
For verbal, Manahattan series' sentence correction guide is amazing. For CR and RC, you can try Princeton Review
. Also, participate in the discussions on this forum. For RC, just practise as many passages as you can, initially without timing yourself, and later with time limit- average 2 mins per question.
For Maths, you can first go through the Manhattan series books to understand the kind of questions you will encounter in GMAT and to learn tricks for solving the questions faster. Then practise from Kaplan
and Princeton Review
. Also, participate in the Maths forum on GMATclub, it will surely improve your understanding of concepts.
Once, you feel that you have mastered the basics, try taking few CATs - Princeton and Kaplan
books come with CAT CDs. You should do GMATprep tests
at the end because GMATprep tests
give the most accurate assessment.
Also, doing OG11
is a must but do it only after completing the GMAtprep tests
since many of the questions in OG11
are repeated in GMATprep. If you do not have enough time, then just practise the last 50 questions in each section since the questions are arranged by difficulty level.