I'm taking the GMAT soon, can anyone recommend the best way for me to study for it? What is the difference between the GRE and GMAT anyway, it seems like the exact same exam!

The tests are VERY similar. I took both, but it was a few years ago. The tests may have changed by now. When I took them, each test was about 4 hours long. A verbal section, a math section, and two essays (each you get like 30 or 45 min). You get one 10 minute break between the essays and the verbal & math section. There is a RUNNING CLOCK during your 10minute break, so make sure you run to the bathroom, grab a snack and some water all within those 10 minutes, or the test will start back up without you! I recommend bring your snack/water with you. They make you put your keys, wallet, cell phone, and anything else you have on you in a locker and they give you a key before you enter the test. I didn't notice much difference in the tests. The GMAT is usually required for MBA programs, and the GRE is required for other graduate programs. I noticed the GMAT didn't test your vocbulary like the GRE did. By that I mean that the GRE would have questions that give you just a word, and you have to pick the word that is the synonym or antonym. Those questions weren't on the GMAT when I took it. The verbal section of the GMAT was more reading comprehension and picking the best word of phrase for sentence completion. The GRE also had a few "dummy" math and verbal sections, where I had to answer the questions but they had no impact on my score. However, I didn't know that these were dummy sections, so you should do your best on all questions in the test.

Word of advice on the essays, I got over 5 out of a possible score of 6 on both test ( a 5 and a 5.5), and can honestly say that you don't need to have a big sophisticated vocabulary to get a high score. You just need coherence. Make sure your essays flow in a logical and are literate.