Hi kokateamol,
It sounds like you're just starting out. Before I offer any advice on a study plan, it's important that you define your goals and plans:
1) Why do you want an MBA?
2) When do you want to attend School?
3) Have you done any research into the Schools that you might apply to?
When it comes to studying for the GMAT, most Test Takers spend 3 months (or more) on their studies; during that time, it's common to spend 10-15 hours per week (or more) on the process. To get a sense of your current abilities, you should plan on taking a FULL-length practice CAT Test. You can download 2 for free from
www.mba.com. A FULL CAT takes about 4 hours to complete, so make sure that you set aside enough time to do so. Once you have your score results, you should post back here and we can put together a study plan.
GMAT assassins aren't born, they're made,
Rich