How much theory do OG/VR/QR provide (as opposed to just questions)?

Apart from a short introduction at the beginning of each section (although the math review is slightly better), the OGs don't do much in terms of theory. The explanations at the end of each section do give you a lot of insight into how the GMAT expects you to think, but that is not a very efficient way to prepare.

Ok, so it sounds like I have to look to third-party sources for theory. Any recommendations?

Hi wholenineyards,

It sounds like you're just starting out. Is that true? Have you done any studying so far?

If you're just beginning, then it would be a good idea to take a FULL-LENGTH practice CAT Test; you can download 2 for free from www.mba.com (and they come with some additional practice materials). If you want to do a bit of practice first, so that you can familiarize yourself with the general content and question types first, then that's fine - but you shouldn't wait too long to take that initial CAT. A FULL CAT takes about 4 hours to complete, so make sure that you've set aside enough time to take it in one sitting. Once you have those scores, you should report back here and we can come up with a study plan.

To help you to establish your own expectations, you should know that most Test Takers spend 3 months (or more) studying for the GMAT; during that time, it's common to spend 10-15 hours per week on the process.

I'd like to know a bit more about your timeline and goals:
1) What is your goal score?
2) When are you planning to take the GMAT?
3) When are you planning to apply to Business School?

GMAT assassins aren't born, they're made,
Rich