I want to prepare for CAT 2021. Please recommend books to prepare?

Hey there, here am sharing a list of few book, hope this helps you. Logical Reasoning and Data Interpretation for CAT by Nishit K. Sinha. Quantitative Aptitude Quantum CAT by Sarvesh K Verma. Word Power made easy for Verbal Ability & Reading Comprehension by Norman Lewis. Mastering the Verbal Ability for CAT for Verbal Ability & Reading Comprehension by Ajay Singh. How to Prepare for Verbal Ability and Reading Comprehension for the CAT by Arun Sharma and Meenakshi Upadhyay. PSC for VA for CAT for Verbal Ability and Reading Comprehension by Nishit Sinha. Quantitative Aptitude For Competitive Examinations by RS Aggarwal. Past Years' CAT Questions by G.K. Publications.

These are a few notable and preferred books for the CAT exam. Always try to have a review first and then go for any book, also, prefer books according to the level of your preparation.