I'll meet you half way; how about a brief summary of how I prepared?
I originally began studying for the GRE in July '09. My thought process was that because both exams tested similar material and similar concepts, I would study for and take the GRE first as a sort-of "practice" GMAT. I studied for about 3 months and scored well enough on the GRE (92nd percentile) to convince mmyself to forgo the GMAT and use my GRE score to apply to a couple of the schools that accept the GRE score in lieu of the GMAT. I was interviewed at one but ultimately dinged from both. I rededicated myself to the GMAT and began studying diligently (2 hours/day on weekdays, 6 hours/day on weekends) in February. I used a lot of material (OG 12th ed., Kaplan Premier, Kaplan Math,
MGMAT S.C. and C.R., Princeton Review '07) but didn't finish each book cover to cover. In hindsight, I should have spent more time with the OG. My fundamentals were fine but I still fell into simple GMAT traps that more practice with GMAT-type questions would minimize. I also took a total of 4 CAT tests:
MGMAT 1 - 700
MGMAT 2 - 690
GMATPrep 1 - 710
GMATPrep 2 - 710
On the day of the test, I arrived to the testing center about one hour early. I really believe that it's important to get in the right mindset before you take the test. I ducked across the street to a deli and reviewed some notes I had on hand. I also tried to memorize one of the many great GMATclub AWA templates posted online. Even though the effectiveness of this last-min prep is limited I believe it "wakes my brain up" and gets me warmed up for the real test (just don't overdo it).
I'm not a super intelligent guy. I knew I was going to have to work hard, be disciplined in my study program, and stay relaxed on the day of the test. Whenever I would get nervous during the test, I'd remind myself that many admission committees say the GMAT only constitutes somewhere between 5-10% of an applicants weighted admission score. Stay upbeat, positive, and tackle the GMAT like a challenge and you'll do well. Good luck!
- CR