Check these PDFs about GRE test, they may help you:

Thank you Sarah

Step 1: Take a GRE Practice Test. Take a full-length, realistic practice test to find out what your Quantitative and Verbal scores are now.

Step 2: Set Your Study Schedule.

Step 3: Develop Your Study Plan.

Step 4: GRE Two Month Study Plan Samples.

Step 5: Rock That Test!

Please open this link:

https://www.pdfdrive.com/gre-books.html

I recommend Best Testing Strategies: GRE Prep By Magoosh and their videos on Youtube.