As you want I am here giving you tips for study for GMAT exam.

Tips for GMAT preparation:

Choose study materials wisely

Create a study plan

Watch your pace

Understand the test format.

Practice more .

Solve lasts year papers .

Think Analytically .

Books for GMAT exam :

GRE Premier 2016 with 6 Practice Test
by Kaplan



The Official Guide for GMAT Review 20...
by GMAC (Graduate Management Admission Council)



Cracking the GMAT Premium Edition
by Princeton Review



GMAT Advanced Quant: 250+ Practice Pr...
by Manhattan Prep GMAT



The PowerScore GMAT Critical Reasoning
by David M. Killoran



The Official Guide for GMAT Quantitative
by GMAC (Graduate Management Admission Council)