lifeisshort - this was exactly the same boat I was in... I started studying in May 2010 and I recently had no idea how to revise the
MGMAT books... but now after much deliberation, thinknig and crawling through GMATClub for tips and advice now I've got my confidence back and realised I'm weak in some areas and strong in others (after doing a lot of OG questions and a GMAT Prep test)... so now I know what to focus on heavily and what to leave aside unless I have time to go back over it.
I also remembered how to study math again (it's been 10 years since high school and I didn't do much math at all in university)...
check out my post regarding
MGMAT material retention...
mgmat-retention-some-tips-102423.htmland here's the list of flash cards I've done so far... more like little personal 'tests' of the material/content rather than flash cards, with each flash card forcing me to think about the concept a bit and sometimes try and explain it to be able to answer the question - it's a great way of cementing knowledge into my forgetful brain!
most of the flashcards are pretty much finished but some need to be completed still (like Critical Reasoning for example)...
MGMAT GMAT Consecutive Integers
https://www.flashcardmachine.com/948625/r9r5MGMAT GMAT Critical Reasoning
https://www.flashcardmachine.com/983558/i33vMGMAT GMAT Divisibility & Primes
https://www.flashcardmachine.com/948826/c54pGMAT
MGMAT E's and V's
https://www.flashcardmachine.com/969193/9fd7MGMAT GMAT Exponents
https://www.flashcardmachine.com/960424/k73sMGMAT GMAT Fractions Decimals & Percents
https://www.flashcardmachine.com/851143/7l1zMGMAT GMAT Geometry
https://www.flashcardmachine.com/976679/u12zMGMAT GMAT Odds & Evens questions
https://www.flashcardmachine.com/948475/4a9jMGMAT GMAT Positives & Negatives
https://www.flashcardmachine.com/948611/8eh8MGMAT GMAT Sentence Correction
https://www.flashcardmachine.com/951383/6v8sdo these flash cards I swear they will help you a lot, just do them say 20 minutes daily, but regularly. You'll start to remember the concepts
MGMAT goes on about in their books (which are extremely useful btw) and before you know it you'll have cemented a lot of the concepts really well into your brain.
hope this helps!