The beginning/pseudo-study. I started my GMAT journey sometime in first quarter last year as I made the new year's resolution of getting into an MBA program in the-then next admissions cycle (Fall 2016 matriculation). I wanted to be frugal about it all (bad decision) while aiming for 700+, and I saw courses such as
MGMAT as too expensive, so I signed up for
Magoosh's self-study course, bought OG13, and scheduled 3 exams in October, November, and December so I'd have the option to cancel and not screw myself over for Round 2 deadlines.
By June I had watched a few of the videos, did a CAT as a benchmark (~600), and did some questions, but I hadn't actually engaged in any real studying up to the point. At the urging of my girlfriend, I signed up for an online course that would help keep me accountable with regards to study (Manhattan Review as
MGMAT's time slots didn't suit me) and bought the
MGMAT book set.
Actual study. Both the arrival of my books and my first class fell on the last days of June, marking the beginning of the 3 months of intense study leading up to Test 1. For those 3 months I lived, ate, and breathed GMAT - besides the 3 hours of online class I had on Saturday mornings, I spent every lunch break with an
MGMAT book, reading through all the chapters and doing all the practice problems, while at night after work I'd hit one of the OG13,
MGMAT, or
Magoosh question banks for continued practice of concepts I had just learnt. During my long work days (12-14 hours a day) I'd also try to sneak in some study, whether it was gmatclub's QOTD or the aforementioned question banks, with the added threat of my boss (who sits next to me though faces away from my computer) catching me an excellent way to force some mental math practice.
1.5 months out. After a month and a half I had finished all the
MGMAT books and attempted a CAT (I believe from
MGMAT) 660. Still not good enough. I doubled down on studying, now using my lunch breaks to hit the question banks (I think I actually finished one or two), also adding a recent discovery, the VeritasPrep free question bank app, to my mix. I kept an informal log of how comfortable I felt with the different concepts - for those I had difficulty with I honed the question banks to give me only those types of problems (e.g. combinatorics), while those I had ease with I practiced along with other concepts I had mastered. If I started seeing I kept on getting problems wrong with concepts I thought I "mastered", I took them out and isolated the problem type again.
1 week out. Coming into the week before my exam, I felt better about knowing the concepts and I attempted another CAT (either OG or
MGMAT) - back to 600. Not a great sign. I also had a new dilemma - what would be the lowest score that I could accept? Normally I would just cancel until I breached 700, but I only had three tries to do so and if indeed I continued to score between 600-660, maybe I should take something close to 700 so I'd have a decent score. Settling on 680/690 I continued my study, which now involved a finer targeting of what I struggled with while maintaining intensity as well as the general question bank study I had been doing up until then.
Test 1. I'm a morning person by virtue of my job, so scheduling morning sessions for all three tests was a given. I prepared my most comfortable set of clothes - apart from the obvious I wore jeans (cold testing center) and had both a cardigan and a hoodie so I could finely adjust once I got there. I also brought food (2 x cereal bars), a bottle of water, and eyedrops for the breaks. I read somewhere that standing confident helps trick you into confidence and forcing a smile can actually make you happier, so when it came time to take my picture I forced the cheesiest smile I could muster with a confident (back straight, chest out) sitting posture, which actually did make me feel a little better. Timing-wise I did alright. IR I ended up rushing but likely because I tried to mental math it out, though both Q and V I finished with a minute or so to go on both.
Somehow I got a 710.
Between Tests 1 and 2 (3-4 weeks). I barely studied during this month - work had picked up and I was a bit behind as I allocated some time to GMAT study closer to the date. I also needed to get started on my applications and making plans to speak with current students and alumni, attend infosessions, and plan class visits. Did some daily question banks in the week leading up to Test 2.
Test 2. A repeat of Test 1. Same clothes, same food/water/eyedrops, same break routine, and same cheesy smile. Timing improved with no more rush on IR (likely helped by actually using the on-screen calculator this time), while Q and V remained within the limit by a minute or two - 720.
Between Tests 2 and 3 (3-4 weeks). I actually studied even less (almost not at all). I was very behind on my essays/applications (I was applying to several schools), and my full focus was on that. I reviewed my study concept "cheat sheet" the night before, and was ready for a sub-700 score that I would cancel.
Test 3. Again, a repeat of Test 1 & 2, though oddly I felt much calmer - almost as if I didn't care - I think I even finished both Q and V sections with a lot of time to spare (5-10 minutes). Imagine how surprised I was when I saw that 750 pop up on the screen.
Looking back. While all the question banks were very helpful, if I had to do it again I'd take the
MGMAT online course with the books combined with free online resources (VeritasPrep, gmatclub, etc.). I'd also obviously start studying much earlier as well... heck I'd take it during my senior year of college.
Given the nature of the test and my test-taking style, I think I hit the right approach throwing continuous questions at myself, though some sort of foundation is definitely needed first (hence the
MGMAT books).
At the end of the day one of those 5 answers is always correct, so skills developed through question bank practice like digesting the information (prompt and answer choices) quickly and correctly, identifying what skills are needed, eliminating bad answer choices and number sense are incredibly important, more so than being able to work out the whole thing. On the test I saved a lot of time being able to, after doing 30-seconds-1 minute of work, see that 3 or 4 answers were incorrect and answer that way. Some quant questions I could even bypass doing any math at all by just looking at what makes/doesn't make sense. It's the same with verbal (except no number sense needed here) - being able to quickly identify what you need to do, what relevant information is present, and what answers just look flat out wrong helps cut down time. GMAT is more a test of logic than anything else.
Product comments. Starting from scratch the
MGMAT books was hands down the best way to quickly teach me all the necessary concepts I'd need to know for test.
Magoosh is a much stronger resource with regards to difficult quant questions (700+) as the explanations are incredible. Both question banks also have questions that are much more difficult which helped me operate better with those questions, though the downside is that there were some more difficult concepts I barely ran into on all three (hence wasted time/energy, but I'm sure I'd be singing a different tune had there been more).
As for the OG guide, it is the closest thing to the actual test (from what I've heard), but the question bank was much easier than the other two. Manhattan Review (online course) was good as well (good instructor), but given that my purpose was to keep me on track with studying, if I could streamline it with
MGMAT (or
Magoosh) I would. If you have good study habits and self-control (I don't) then an instructor-led course isn't necessary.