Hello everyone,

First of all I would like to thank everyone who answer the questions and post useful links over here, your help guys is totally appreciated.

I took the GMAT at the end of last year and scored 530, only self study with the official guide. Then I retook the test again in march this year after studying Kaplan materials and my score dropped to 500

Now, I've been studying Manhattan sets for the last three months, am preparing for my next , and hopefully last , exam in September 21st .
My target score is above 630.

Any recommendations? Failure is not an option anymore

Thanks in advance,
Ahmed