Best GRE Books
Here are a few of the best GRE books out there for prepping for the Revised GRE.
1.Best GRE Book #1 Cracking The GRE
2.Best GRE Book #2 New GRE : A Strategic Approach,Premium Edition
3.Best GRE Book #3 The Official Guide to the GRE Revised General Test
And many more
GRE Examination Syllabus
The first two sections of the GRE test are Analytical Writing sections. The duration of the two tasks to be completed as part of the Analytical Writing section lasts 75 minutes (1 hour and 15 minutes).
The objective type questions in the GRE test starts from the third section. The third section is a 30 minutes – 30 questions verbal section and the fourth section is a 45 minutes – 28 questions Quantitative section.

The GRE Vebral Section comprises about 6 Sentence Completion questions, 7 Analogy questions, 8 Reading Comprehension questions and 9 Antonym questions. You will have 30 minutes to answer these 30 questions. Please remember as GRE is a computer adaptive test, you will not be allowed to skip a question or come back to the previous question. Take a lot of care before you mark an answer.

The GRE Quantative Section comprises 28 questions. About 14 of these questions are problem solving questions while the other 14 are quantitative comparison questions. Data analysis questions also form a part of the quantitative section of the GRE test. You will have a total of 45 minutes to answer these 28 questions.

GRE Analytical Reasoning Section
This section replaced the multiple choice Analytical Reasoning section.  It tests the ability to analyze issues as well as the writing ability through 2 essays.