GMAT Strategy

Good for you - you sound really motivated! In your first month, you mention only Geometry and EIV as the two areas of content focus. If you're trying to jump from a 600 to a 700, you need to get better at everything (and, in particular, the things that are tested the most commonly - and geometry is not at the top of the "frequent topics" list).

I'd start by analyzing your strengths and weaknesses in great detail and using that analysis to drive your study. This is likely going to mean additional resources beyond the Geometry and EIV materials.

I'll tell you how to analyze using your most recent MGMAT test, since those are the tests I obviously know the best.

Assess timing. The instructions below focus on quant, but you can do the same thing on verbal - just substitute these timeframes: For SC, over 2min, under 30 sec; for CR, over 3min, under 1 min; for RC, over 5min and under 3min on first question (which includes readthrough), over 3min, under 1 min for other questions. Also, obviously, substitute "41" for "37."

1. On your last practice test, add up the number of questions on which you went over 3 min. Include in your count the number of those that you got right and the number wrong.
2. Divide the number of questions from #1 by 37. This is the percentage of total questions on which you spent way too much time.
3. Add up the total amount of time you spent on those 3+ min questions.
4. Divide the amount of time from #2 by 75. This is the percentage of your total time (75min) that you spent on the 3+ min questions.
5. Compare #2 and #4. What percentage of your total time are you spending compared to what those questions represent as a percentage of all 37 questions?
6. Add up the number of quant questions on which you spent 1min or less and you got wrong. These questions represent an additional potential cost for spending so much time on other questions, because when you go that quickly on a problem, you tend to make more mistakes. Maybe you could've gotten some of these right if you'd spent closer to the normal 2 minutes.

Also run the assessment reports and look for this data:
- areas on which you scored <50% correct
- areas on which you averaged >20sec above or >30 sec below what you were supposed to average
- areas on which there is >30sec (overall question categories) or >45sec (question subcategories) disparity in timing (in either direction) between the ones of that type that you got right and the ones that you got wrong
Also look at the question lists and review:
- problems on which you spent >30 sec above or >45sec below what you were supposed to on problems of that type
- problems below your level that you got wrong - eg, if you're currently scoring 650, look for problems in the 500-600 category

Pat yourself on the back for things on which you scored >50% correct (the higher, the better) and for things you answered correctly in the general timeframe you were supposed to spend. For things you answered correctly very quickly, do still pat yourself on the back, but know that doing something too fast increases the chances you'll make a careless mistake - so just be careful.

Note on some of the average timing data: if your timing got messed up in the section (eg, you spent too much time early on and had to rush later on), then your data will be skewed because you will have been forced to do questions towards the end much faster than you'd otherwise have done them (possibly to the point of making random guesses in a few seconds). If this happened in either section, you'll have to dive down into the data for individual problems rather than use the assessment reports to do the work for you, because the average timing may seem to be okay even though you had a bunch that were too long and a bunch that were too short.

If you'd like, once you've done this analysis, come back and tell us what you found. We can help you figure out what to do about it!

Oh, forgot to answer your question about GMATPrep. There are no official explanations for these, but you can search the forums here for specific question text or post questions if you don't find the problems already posted here. My company also hosts forums and we have two dedicated folders for GMATPrep (one quant, one verbal) - so you can also search or post there. (Generally a good idea to search first, because it can take a while to get an answer to a new post, and if the problem has already been discussed, you don't have to wait for an instructor to respond!)