Here's what you should do:
- Diego is right - the first thing to do is to take a full, timed practice test. You can take an Mprep one for free here:
https://www.manhattanprep.com/gmat/free ... tice-test/
- Analyze the practice test you've taken in a lot of depth. Which areas were you weakest? Strongest? Fastest? Slowest? Decide which topics and question types need more of your time and attention. Be very aware of your timing as well.
- post your results on this forum to get targeted advice, and browse through the advice given to other students.
- Use Strategy Guides from some major company (I obviously recommend Mprep, but they'll all contain the same material, just presented in slightly different ways)
- Study topic-by-topic in those guides, then practice each topic with OG problems. For example, read the chapter on SC subject/verb agreement, then go do a set of 8-10 problems in the OGs that relate to that subject. You can find problems by topic using GMAT Navigator:
https://www.manhattanprep.com/gmat/stor ... navigator/
Do this for each chapter in the Quant and Verbal strategy guides. Aim to do this in 8-10 weeks.
- Make sure you are tracking all of the OG questions you do, and timing yourself while you practice. Hold yourself to strict 2-min time limits per question! (I highly recommend using Navigator to track your OG problems)
- Alternate between Quant and Verbal. Don't just focus all on quant!
- Keep a record of any mistakes you make, so you can locate patterns in your errors:
https://www.manhattangmat.com/blog/index ... -studying/
- Once you've covered all of the topics, practice your skills with random timed sets out of the OGs. Set the timer for 20 minutes, for example, and do questions 1-10 (skipping any you've already done).
- Take a practice test after 4 weeks, then every 2 weeks after that. Increase to a test every week for the last 2 weeks before your real exam.
- Analyze your data from the random sets and practice tests, and go back to any topics that need extra work.
Good luck!
