Are you preparing for CAT 2012 or 2013?
The next CAT which will be conducted later this year will be CAT 2012. You can buy study material of TIME, CL, IMS or MBAguru...
by now you should have been through with your basics, if not start preparing today at this very moment. Sharpen your basics first then move on to taking individual section wise mock questions and slowly move on to full length tests. Join online test series on CAT..you may consider Testfunda.
understand your strengths and weeknesses and prepare accordingly.
All the best!!