I have the Kaplan GRE prep book that has the word groups and root lists in it. I made flashcards for the groups and lists to make it easier than just reading it out of the book. I also have the Kaplan vocabulary in a box. I have been studying the words, one letter at a time, and removing the words from my card deck that I have down solid. I also have the Kaplan vocab app on my ipod that is awesome. It has the words divided into easy, medium, and hard, or you can study them all. It has a great quiz feature and is great for when I don't feel like flipping cards. Vocabulary isn't my strong point either and I am studying my butt off to raise my score on the verbal. I hope this info helps you someway. If you don't have a Kaplan book, I suggest getting one or any kind of test prep book. They're about $30, but if you can raise your score a couple hundred points, like I did, it's worth it. Good luck, YOU CAN DO IT! 😀 👍