As you have asked about the study tips for Graduate record Examination (GRE), I am giving you information about it, check below for the details

The first step in preparing yourself is to learn what to expect from the exam's format and structure.
The GRE has three types of sections, and each has a time limit in which it must be completed:
Verbal
Quantitative
Analytical Writing

Start early and study often
Practice under timed conditions and on actual Section Adaptive Tests

Learn Vocabulary in Context
Once you’ve studied the definition, read the word in context

Don’t Leave “Holes in the Foundation”
You should have deep knowledge of the basic concepts.

Take Your Online Practice Tests Seriously

Develop a Study Program
A summary for the week
A day-by-day guide of what you should focus on each day
A breakdown of what you should do to prepare for the Verbal section of the GRE
A breakdown of what you should do to prepare for the Math section of the GRE
Suggestions on how to improve your writing skills to help prepare you for the essay section of the GRE
Suggestions on how you should acquire new vocabulary words so as to score well on the verbal section of the GRE