GRE books are categorized under following sections. Click on the book image to purchase it:

GRE Must Have Books
GRE Word Power
GRE Writing Section Books
GRE Reading Section Books
GRE Quantitative Section Books
GRE Test Practice Books

GRE vocabulary has over 3000 words. Many students are not comfortable with memorizing words from flash cards or have difficulties studying from textbooks; Amazon Kindle is an ideal solution for them. Amazon Kindle is a software and hardware platform, essentially an e-book reader developed by Amazon.com.
GRE POWERPREP GRE POWERPREP is a FREE software provided by ETS for the preparation of ETS-GRE. The software is detailed practice equipment complete with information and instructions to prepare for GRE. Every GRE test taker should use this software before appearing for the GRE test. Click here to download the software for free.
This is a must have book for any GRE test taker. This book contains full GRE tests which were administered in the past. This is the official GRE book. There is a good chance that you will see many questions in your GRE test straight from this book.
This is an excellent book for GRE test takers. It has six full-length model tests with answers and explanations in this up-to-date manual. You will also find intensive test topic reviews covering antonym questions, analogy questions, sentence completion, reading comprehension, vocabulary, analytical writing, quantitative comparison, data interpretation, and math. A 3,500-word master vocabulary list with definitions is supplemented with a GRE high-frequency word list. The CD-ROM enclosed with the book offers a computer-adaptive model GRE test that is similar in structure to the actual GRE test. All questions on the CD-ROM are answered and explained, and exam results are scored automatically.

There are many exercises in this book based on GRE pattern like sentence completion, analogies and antonyms. Word Power Made Easy does more than just adding words to your vocabulary. It teaches ideas and a method of broadening knowledge as an integral part of the vocabulary building process.

GRE wordlist has 3000+ words. The best way to memorize these words is to understand how the meaning of a word can be extracted from its roots. This is an easy-to-access, dependable sourcebook on the origin and development of thousands of words, each word has been thoroughly checked by ranking linguists and the information is presented in a manner as entertaining as fiction.
This book gives nice, concrete, concise advice for GRE writing section. This book has good, solid, middle-of-the-road answers to almost all Issue and Argument topics. This can serve as the best way to prepare for the Analytical Writing part of the GRE.
This is one of the most useful book on speed-reading. GRE verbal section can have 3-5 reading sections. A good reading speed is a must for high score.This book gives excellent tips on improving your reading skills. It goes from the goals of reading (getting the main idea, getting specific details, overall perception) to specific techniques that help achieving those goals. It has numerous exercises.
There has been a steep increase on probability and statistics related questions in GRE quantitative section. If you are not comfortable with this topic, Schaum's Outline of Probability and Statistics can help you get acquainted with the skills needed to solve probability and statistics related problems.
This plain-English guide to intermediate algebra explains what algebra is all about, in language that is easy to understand. Then it shows you how to solve every kind of problem that you will find on your tests, step-by-step! You get 885 completely worked problems, with each step in their solutions. More than a thousand additional problems let you test your skills, then check the answers.
GRE test features a quantitative comparison section within the math portion of the exam. 501 Quantitative Comparison Questions helps prepare students for GRE tests. By completing the exercises in this book, students can increase their math knowledge and gain familiarity with specialized questions needed to score high. The book features complete answers, each with a full explanation.
Before taking the real GRE test, you should take few mock GRE tests. This book is an excellent GRE practice book. Initial sections of this book can be skipped. This book gives you 120 practice test questions covering each section of the exam, plus a CD-ROM with 4 full-length practice GRE tests and instant score reporting.
This book is a good resource in preparation for taking the Graduate Record Exam. It is full of examples and good for practice once you are ready for GRE.
This book along with the CD is good for practice. The CD that comes with Kaplan contains 6 timed practice quantitative sets, 6 timed proactive verbal sets, and 3 full CAT's. The practice sets are good to use. It is recommended to buy this book few days before your GRE test just for the practice tests.