Use the 5 MGMAT guides. They deal with GMAT with a view to addressing those with weak math but you will learn a lot. and a lot of practice.

Also, just to give you some confidence, GMAT math cannot kill you. You will do well.

All the best. And someone on the forum is always available to help.

I agree about using the Manhattan GMAT math books for learning the fundamentals. Then I would take some of the gmatclub math tests. Those are really tough tests and will really push your quant abilities to the next level.

Reshma - I trust you studied math till 10th standard. That is all you need
For GMAT.

Data sufficiency questions are bit tricky and are very intelligently designed
Practice the DS questions more. visit BTG forum regularly.

Note:-
Many users post the CAT ( the Indian pre MBA admission test) questions here. For example- question of probability. Don't pay much attention to those questions. Stick to GMAT pattern only.

Key is to solve ample number of questions and analyze the questions that you were not able to solve correctly.

thank you all!! I think this support itself really helps confidence levels!

appreciate all the guidance

Also, don't be afraid to work on your fundamental algebra, geometry, and arithmetic the whole time you are preparing. Even when you have mastered those topics, you can still get faster and more confident.