Hello! Do you still have the MPrep books from before? We haven't published new versions in the past 2 years, so you're good with the existing books if you have them. If you still have your Official Guide, you can continue to use that as well.
Also: You may want to ask our Student Services team whether there are any discounts for returning students. I don't know whether there are but it's worth asking!
The big first step is to figure out what your current scoring level is—and your current strengths and weaknesses. Ask our student services team about reactivating your online resources (there is a fee for this, but it will give you access to CATs, GMAT Navigator, and a bunch of other good resources—I don't know the details because it depends on your original program).
Then, take a CAT under 100% official conditions (you'll probably want to choose test order 3, which puts V—your strength—first). And analyze the results. Is your V still 40+? Great. Basically just refresh using your existing materials (if you still have your books). If you don't still have your books and your score has dropped a lot, use your analysis to decide which one(s) you really need to build your skills back up. (Feel free to give me your analysis and ask me what I think.
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Your Q scoring level indicates that you need to start from our Foundations of Math guide. Give yourself a solid 2-3 weeks to work through that book thoroughly and carefully. There are online assessments associated with that book—take them to confirm that you're ready to move up to the "main" strategy guides.
And—if you no longer have any books—you will likely need all 5 quant strategy guides as well as the Official Guide (I would go for OG2018 vs. the just-published OG2019—we haven't updated our study resources for OG19 yet).
Finally, look at this article series:
https://www.manhattanprep.com/gmat/blog ... our-score/It will help you to think about how to structure a study plan. When you've got an idea of what you want to do, share your plan here and we'll comment / advise.