CAT

You should refer books like quantitative aptitude , verbal reasoning and data interpretation by Arun Sharma. Give mock tests as much as you can to practice.

Admissions of SIBM Pune are done by considering SNAP score only.

a lot of preference is given to the profile of a candidate.

Dear Manoj,
It sounds good because you are passionate about CAT. I will suggest you to start your preparation with your graduation. You just have to manage time as per your daily schedule. Give at least two hours for CAT preparation.

You want a class that teaches BMS syllabus and CAT syllabus both? In that case I cannot advice you. But I too being from Thane, I had joined TIME which I found to be highly beneficial. Their catalysis sessions and AIMCATS are excellent offerings and their faculty is quite open to helping out.

Yes, go for it.

You need to get enrolled in a good MBA coaching institute and try to solve and practice as many questions as you can, they will help you a lot.

It completely depends upon you buddy as we can only give you the direction.

Dear Sanjo,
Mostly, all TIME institutes maintains same saga, but there are some at brigade road Bangalore is the best one.
All the best.

Dear Sona Gupta,
You can prefer career launcher, IMS and TIME as these are the best institutes for coaching of CAT at Lucknow.
All the best.