I think
OG is a good start. For Sentence Correction and for basic math concepts, the
Manhattan GMAT series of books are pretty good. Oficial guide(
OG) by itself is insufficient from an exam stand point. How long you need to prepare really depends on what level you are at, right now. Take the diagnostic test in the
OG book and see where you stand. Study at a steady pace and dont take extended breaks while studying. If you dont maintain a good rythm, you run the risk of unlearning what you have learnt.
Also, post your question in the GMAT forum. You will get some good tips from the folks there. The following thread should help. Good luck with your studies!
1-t44327ashudce
Hi NC,
I am a newbee and am quite impressed by your commitment and profile.
I need your inputs on few points to start with:
1. How far can
Official guide take you? Do we need additional material to study.
2. Considering this is mid Feb, when can I target GMAT exam to count for 2009 session.