My advice beyond the OG11 is the
OG Quant and Verbal. The RC (Reading Comprehension) in the Verbal is great stuff. The
OG is the meat an potatoes of the GMAT. The other stuff, all
Manhattan GMAT (
MGMAT most places), Kaplan 800, SC1000, RC1000, CR1000 are bonus stuff. They are great resources but start with the
OG. Here are the books I've used:
OG11
OG VerbalOG QuantKaplan Premiere Program 2008
Kaplan Math Workout
Kaplan Verbal Workout
I worked my way through the Kaplan Math book complete and some verbal the first time and didn't really look at the Premiere program. I took it and got a 650. I decided that if I got a 650 without truly preparing for it, I think it is possible for me to raise my score 50 - 100 points. That's why I bought the
OG books and have joined this forum.
Advice regarding the forum. Browse the areas you need help with. I needed help with quant so I browsed that. BUT....MAKE SURE YOU HIT THE AREAS YOU UNDERSTAND. Answer a verbal or quant question with a good explanation will get you kudos, but more importantly, it will solidify your knowledge of the subject. The best way to turn something into a long-term memory is to teach it. Plus, you really make this forum what it needs to be when you contribute your own expertise/knowledge.
Just my opinion.