CAT Preparation

You should opt for TIME coaching institute.

hello,
for quants : Sarvesh Verma
English : Norman and lewis and wren and martin
LR / DI: Arrihant Publication
Or You can purchase complete study material of CL/IMS/TIME from market .

It's absolutely fine if you believe and are confident enough about yourself and your self-study. You can easily get all the study material for CAT. Just be confirmed about the books and authors you would be using are the appropriate and the best once. However, I'll suggest you to join some good coaching classes if you don't think that you'll be able to crack CAT with good percentiles with your self-study. (Because cracking CAT is not enough, you gotta crack it with excellent percentiles to secure admission in a good B-school)

The skill can be acquired through regular practice. Coaching manuals are available in all leading bookstalls. Besides, some weeklies and magazines carry practice questions, mock tests and so on. Coaching assistance will be available with local and national networks such as TIME, Career Launcher etc.

Allthough time for CAT is near, coaching and concentrated preparation will definately help to improve your chances to score good percentile.

You can refer to CAT by Arun Sharma. It is a very useful, simple and is having an easy to understand language.

No, it doesn't matter to which field you belong. For CAT, minimum 4-5 months are required to score well.
All the best.

In case you have excellent verbal and numerical ability developed over the years in your basic schooling and graduation, you can prepare for CAT in 2 months easily.

It will be a little difficult as the competition is very high and the level of questions is rising year by year. You need very clear and good conceptual knowledge about all the sections to clear it. But don't loose heart. I have seen people preparing for 3 months and getting into IIMs. Do prepare hard in these 2-3 months and you might be able to crack it. All the best.