You can follow below preparation tips to clear GMAT exam

Verbal section

- Practice as many reading comprehensions as possible.

- Brush up your basic grammar.

- Read as much as possible.

Analytical Writing Assessment

Practice writing as many as many sample essays as possible.

Integrated Reasoning

Practice graph as much as possible

Quantitative section

Work on your basics. Try to clear your concepts.

Solve previous year papers to understand the exam pattern and level of the exam.

All the Best!!