I just wrapped my MBA but thought I would share my prep plan for the GMAT. I have about a dozen friends and people online who have used it with generally high success (lowest score is a 700, highest is a 790). The strategy is for people who aren't having trouble per se just want a good prep plan without taking a class. If people want I can also add details of what to do if you are having a trouble (helped my friend go from a ~550 to 740)
My "nums": Overall - 770, Q:50, V46
Time required - 5 weeks for steps 1-6, 1 week intense or 2/3 weeks normal for steps 7-13
Materials you need
1) Princeton Review
2) Kaplan Premier
3) Kaplan 800
4) Offical Guide (All three books)
7) The replica of the pad & pen (they sell the Manhattan GMAT one on Amazon for like $20 - GET IT don't skimp on this)
Optional Materials
1) A Manhattan GMAT book focusing on the area you are having the most trouble with (for most people this is the Manhattan GMAT Sentence Correction book)
DO NOT START WITH A PRACTICE EXAM - The idea that Kaplan/Princeton use of starting with an exam to see where you are weak is silly you need to have a good basis of knowledge and understanding of the exam to accurately understand the material you are weak in
Step 1: complete Princeton Review book - read everything, do all practice problems (skip exams)
Step 2: complete Kaplan Premier Book - read any new materials & strategies and do all problems (skip exams)
Step 3: complete Kaplan 800 book (skip exams)
Step 4: Take practice Exam #1. Use one of the real ones you downloaded from the GMAT site. (You downloaded them right?)
Step 5: Review and redo the hardest 10% of the problems from both Kaplan books in the areas you were weakest in
Step 6: Finish the big OG . Use different time frames and challanges to get used to pressure (ex: 5 easy questions in 2 minutes, 5 hard in 5 minutes, take 5 problems and give yourself 10 seconds less on each one (60, 50, 40 30...secs). Pay attention to what you get wrong and look for trends. You're weaknesses will show up better under harsher practice conditions
(note that steps 7 onwards i did during a week off so they are more daily plans)
Step 7 - Take Practice exam #2. REDO the same real one you took before (only 2-3 of the problems will be repeats, and you probably won't remember them anyways)
Step 8: Practice exam #3 - I used the one in the Princeton book. Also do 60 practice questions from the two smaller OG books
Step 9: Practice exam #4 - I used test #2 from the web. Also do 60 practice questions from the two smaller OG books
Step 10: 120 questions from the OG books
Step 11: Practice Exam #5 - I used one form Kaplan 800 I think. Also do 60 practice questions from the two smaller OG books
Step 12: Practice Exam #6 - Retake #2 from the web. Also do 60 practice questions from the two smaller OG books
Step 13: Day before exam - Take it relatively easy - 5-10 questions from each section, 5-10 extra in your weakest section (like 1-1.5 hours of work) and then go to sleep so you get a normal nights worth before the next day. Set your damned alarm, the backup alarm and your cell phone. Let not take the chance that you sleep too late.
TEST DAY - if you have a morning exam wake up VERY early & chill out for a bit. If you have some time about 2 hours before you leave do 15-20 total questions from every type of problem to get the mental juices flowing. Get ready, grab your stuff. Did you grab your wallet & ID? Walk back inside get your wallet - no your corporate ID doesn't count as official ID - grab that drivers license/passport etc. Now you can go to your exam. Leave way early - did I hear you complain that you'll arrive an hour early if you leave now? My test center let me start 25 minutes early and you want to make sure that anything short of a meteor strike won't make you late. Grab a snack & drink for your breaks on the way (I used a vitamin water and protein bar - ate half of the bar each break and drank as much as I felt comfortable with).