The most important thing I would stress is to suppress the desire to answer every question. You often get less than a minute per question, and spending even a few seconds on a question that you are unsure about can hamper you in answering future questions. Therefore, it might be more advantageous to skip questions you are unsure about, thus ensuring you answered as many questions as possible correctly. I do believe there is negative marking, so this strategy works well.
In terms of questions asked, its quite standard to other numerical tests, plenty of percentages and GRE level math questions.