Hii

You may take reference from this youtuber or any other you tube video but don't rely on them for cracking CAT.  Try to focus on books too which will help you to crack CAT Exam.

Following are the best books for CAT Exam. Also refer to this books-

• Arun Sharma’s How to prepare for Quantitative Ability for CAT, published by Tata McGraw Hill

• Word Power Made Easy by Norman Lewis for VARC section.

• How to Prepare for the Verbal Ability and Reading Comprehension for the CAT by Arun Sharma and Meenakshi Upadhyay (Tata McGraw-Hill) is a workbook with practice questions and tips based on previous CAT papers

  Recommended

• Trishna's Verbal Ability And Logical Reasoning For The CAT And Other MBA Examinations by T.I.M.E. Publisher: Pearson.

To know Best Books for CAT Preparation in detail, How to crack CAT 2018 in first attempt, CLick below link-

https://bschool.careers360.com/articles/how-crack-cat-2018-in-first-attempt

All the best.