Hey,
CAT or Common Aptitude Test consists of various sections like Verbal Ability,Reading Comprehension,Data interpretation and Logical Reasoning,Quantitative Aptitude. Total number of Questions is 100 and total marks is 300.
First off,be thorough with the syllabus and solve previous years papers and join online mock tests.
You can offer books like:
Verbal Ability and Reading Comprehension:
1.Verbal Ability and Reading Comprehension by Arun Sharma and Meenakshi Upadhyay(Arihant)
2. English Grammar and Composition by Wren and Martin
3. PSC for VA for CAT by Nishit Sinha
Data Interpretation and Logical Reasoning:
1.CAT 2018 Data Interpretation & Logical Reasoning by Gautam Puri
2.Logical Reasoning and Data Interpretation for the CAT by Nishit K. Sinha
3.How to Prepare for Data Interpretation for CAT
Arun Sharma
For Quanitative Aptitude:
1.NCERT Mathematics Books (Class 6 to 10)
2. How to Prepare for Quantitative Aptitude for the CAT by Arun Sharma
3. Quantitative Aptitude Quantum CAT by Sarvesh Sharma
Apart from that,you should newspapers like The Hindu,The Times of India to build your vocabulary and improve your current affairs.
Hope this helps.
Good luck.

Here I have also provided some guidance for CAT exam with section wise books for better understanding.

One of the major sticking points is on what strategy they should adopt while preparing to have absolute mastery on the verbal section. It should also be noted that there is no one size fits all strategy available for students as a whole and each and every one has to have a customized strategy of their own to be successful in their endeavour.

The below-mentioned tips would be helpful for you to score maximum out of the so-called section:

(1.) Before starting, you have to known your strength and weakness. To do this, take a diagnostic mock CAT test. This will tell you your strong areas and weak areas across all the sections.

CAT mock tests books-

CAT 2017 -27 Topic-wise & Year-wise (Solved Papers 1990-2016)(Amazon)

CAT Topic-wise Solved Papers (1994-2016) with 6 Online Practice Sets(Flipkart)

(2.) Make a short horizon plan (daily or weekly) and long horizon (till CAT) plan. You can check a idol CAT exam plain also. (You can make some changes in time table according to your needs)

(3.) Divide the number of chapters (or concepts/ syllabus) by the number of days in which you want it to cover.

Quantitative Aptitude:

In QA section, you should keep in your mind 70/30 rule. According to this thumb rule, approximately 70% of the questions in Quant come from 30% of the chapters, viz., Number System, Geometry, Time Speed Distance, Ratio proportion, Function/graphs, Equations, and Permutation and combination. If you are able to get even 3/4th of these questions correct, you will get 92+ percentile in QA. But did`t forget to prepare for these important chapters until you not confidant enough.

Try to solve questions in short time with the help of tricks.

Best Books for QA:

However mostly candidates go with Arun sharma or Nishit Sinha and no doubts both are good books to clear basic as well as to do practice. But if you are willing to learn short tricks then either join any good institute or find a book or follow notes.

You can follow Class Notes of Maths by Rakesh Yadav, this notes are very help to learn short tricks of QA which will help you in saving time in exam hall.

Other best books for basics:

How to Prepare for Quantitative Aptitude for the CAT by Arun Sharma

Quantitative Aptitude For Competitive Examinations by Abhijit Guha

The Pearson Guide to Quantitative Aptitude for CAT by Nishit Sinha

Books list for LG & DI-

In LRDI section, students are expected to have practiced different types of questions. This is one such section which students prepare on their own even if they have joined a coaching institute. Most frequently asked LR questions are of the following types:- arrangement-based questions (linear, circular, tabular), sequencing-based questions (loose sequencing and strict sequencing), Network diagram, Games-based and team formation questions. In DI, most of the questions will be based upon two or more than two types of charts.

Best Books for LG & DI-

How to Prepare for Logical Reasoning for the CAT by Arun Sharma(DOwnload PDF)

How to Prepare for Data Interpretation for the CAT by Arun Sharma

Logical Reasoning and Data Interpretation for the CAT by Nishit K Sinha

Books list for Verbal ability and Vocab-

In VARC section, questions can be distributed into three types – (Type 1) Questions based upon logic like Para jumble, Critical reasoning, FIJ, Logical completion of idea, etc; (Type 2) Questions based upon application of grammar like Sentence correction and vocabulary-based questions like Fill in the blanks questions; (Type 3) Questions based on reading comprehension.

Best Books for VA-

How to Prepare for Verbal Ability and Reading Comprehension for the CAT by Arun Sharma (Download PDF)

The Pearson Guide To Verbal Ability And Logical Reasoning For The CAT by Nishit K Sinha

Word Power Made easy by Norman Lewis (Very effective for vocabulary building.)

How to read better and faster (Must Try)

English Vocab Builder Ebook (Very effective in learning and memorizing new vocab words, this book use scientific ways, by the help of tricks and images. With every word a trick and image is provided so that it is very easy to learn and memorize new words in short span of time)

Best of luck

Hello Rahul,

There is no "best" book for any subject out there. Everything relies upon the amount you are Practicing from any book.

But the"most suggested" books for MBA Preps are recorded underneath, arranged in order of priority  for each subject:

Quantitative Ability:

Quantum CAT by Sarvesh Kumar Verma:

Quantitative Ability for the CAT by Arun Sharma:

Verbal Ability:

Verbal Ability for the CAT Sujit Kumar

The most suggested VA book out there. Gives the most itemized arrangements and the best methodologies for VA in General.

Comprehension for the CAT by Sujit Kumar

RC99 by Aristotle Prep:

VA and RC for the CAT by Arun Sharma and Meenakshi Upadhyay Sharma:

Be that as it may, the most ideal approach to improve your VA is to improve your vocabulary

Intelligent Reasoning and Data Interpretation:

While there are no LR/DI explicit books that are prescribed when all is said in done, the most ideal approach to takle LR/DI is to solve Past Year CAT papers, Mocks, Previous Papers of Other Management Entrance Exams, for example, XAT, SNAP and so forth.

HOPE THIS HELP YOU OUT, AND BEST WISHES FOR YOUR CAT PREPARATION

THANK YOU

Hello Rahul

The study material provided by TIME is very good. For basic concepts it should be enough. In addition to that you can follow the following books:

VA-RC:

For Vocabulary: Word Power Made Easy by Norman Lewis

For enhancing the reading speed, any novel and newspaper and anything you can read will be good enough.

For Grammar: Normal Grammar Rules from Wren and Martin.

LR-DI:

Books by Arun Sharma (TMH) and by Nishant Sinha (Pearson)

Quant:

Quantum CAT by Sarvesh K Verma

Quantitative Aptitude by Arun Sharma

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