Review the content and design of the GMAT at the Graduate Management Admissions Council official site. Compare the exam items with your undergraduate skills and courses you completed.
Get a used textbook online or at your bookstore, if you have not taken a math course since your first year in college. The GMAT test questions are heavily weighted towards higher math.
Get GMAT preparation materials at major bookstores or at your local library. Take the assessment tests to identify your weak areas and your strengths. Download free exam practice software at the MBA website.
Create a daily and weekly study schedule. Set goals and focus on developing proficiency in one test skill at a time. Make your own GMAT flashcards. A PowerPoint slideshow works well as an electronic version of flashcards.
Use free online study materials, available from sites like Test Prep Review. Find links on this site to practice test questions for the GMAT and many other standardized tests. Check their Self Improvement Directory for additional help refreshing your skills.
Practice computer-based testing. The GMAT uses heuristic computer software. During the actual exam, the computer adjusts the difficulty of your questions, when you answer incorrectly. This could lower your score.
Join an exam preparation study group. Consider online or classroom preparation and study skills courses, depending on the time you have left to prepare.