Hi All,
I appeared my GMAT on 14th of August and was waiting for the Official score before writing my debrief.I have listed down the things I have learnt on this "journey".
First some background info.I am 25 years old and from India. I am working for a MNC IT company as a technical lead for the last 3.8 years. I started my GMAT preparations 6 weeks before my exam.
The materials I used were :Manhattan set of 8 books (Manhattan SC is a must)
Official Guide 13
4GMAT books for Quants ( the best for quants)
Test series that I used :
Manhattan
Kaplan and GMAT Prep.
I studied for 5-6 hours everyday after office and on weekends I clocked around 10 hours. Being a non-native english speaker my biggest weakness was sentence correction. I used both the SC Grail and the Manhattan SC guide.
I started taking the tests 2 weeks before the exams. I would take 1-2 tests in a day. To make things harder I used to play music at a loud volume

My tests score were in the 740-750 range in the Manhattan tests,680-720 in Kaplan and 720-750 in GMATPrep.
Test Day:I had my exam at Pearson Vue center in Hyderabad at 9:00 am. The test center is around 30 kms from my home and it took me about an hour to reach there.
I arrived 45 minutes early and played angry birds to kill time

and control my nervousness. Completed my AWA on time. IR was easy and I was sure I had done well. Same for Quants. I finished with 5 minutes to spare and was confident of scoring above 48.
While facing the verbal section I started feeling tired and drowsy. I hadn't slept the night before (was too nervous) and it started messing up my game. I had to reread some of the questions and RC took ages. Still finished with 3 minutes to spare. And then the score popped up.
I had mixed feelings on seeing the score.It wasn't too great but neither was it too bad. I was expecting a score of 750+.
Takeaways and tips for others :Get sufficient amount of sleep the day before the test.It can have a huge impact on your score.
Create a study plan and stick to it. If you miss a target make sure you complete it as soon as possible.
Spend sufficient time on analyzing the test results. It can help you improve quickly.
If possible visit the test center a few days before the test. This will help you familiarize with the route you have to take on test day. Getting stuck in traffic can make you lose your mind

.
And finally don't take the scores too seriously.A bad score is not the end of the world. Winning the war is more important than winning a battle. You always have the option to retake the test.
Best of luck to all future test takers.