You should first consider whether you want to take an online course or attend classes. The advantage of taking this external aid through these classes, is that they take you through all the shortcuts and simple practices that reduce the overall difficulty of the exam making it easier to get the score you need.
This is a comprehensive list of the best GMAT Coaching centers in Bangalore, in any order.
please be clear on how you are comfortable studying and if you will be able to give time for self study or not. GMAT is not an easy paper but also not difficult to crack provided your approach is well timed and strategised. GMAT is best prepared through its official website http://www.mba.com
This is the best website or for that matter source to prepare for your GMAT exam and teaches just what is precise along with giving you insights on colleges, ranks, scoring etc. Also you will have to clear your IELTS/TOFEL.