nutty,
don't worry, and believe in yourself that you can do better. don't give up because you will eventually get there. if you want an online course, you may look into gmaxonline.com. they are pretty good, and teach the fundamentals rather than tricks such as princeton and kaplan do. as chauhan suggested, work through the [tooltip=Official Guide]OG[/tooltip] again and understand the concepts behind each of the questions. you won't see the same question again on the real exam, but if you understand the concept, you'll be able to apply it on test day.