Hey

First go through the exam pattern and syllabus of the exam.As per the syllabus of MH CET law, you should read the subjects such as legal aptitude, general knowledge, current affairs and logical reasoning.

https://www.google.com/amp/s/law.careers360.com/articles/mh-cet-law-exam-pattern/amp

Books for preparation

Legal aptitude and legal reasoning-

5 year LLB - Indian Polity books up to class 12th

3 year LLB- Indian Polity by Laxamikant

Previous year papers to understand the type of questions asked in the exam

General knowledge with current affairs

5 year LLB- NCERT books of History, Geography and Economics

Newspaper

Monthly current affairs

3 year LLB-

NCERT books of History, Geography and Economics

Newspaper

Read any one monthly current affairs

Logical and analytical reasoning

5 year LLB- Verbal and Non-verbal Ability by TMH PUB.

Practice mock tests

3 year LLB -Verbal and Non-verbal Ability by TMH PUB. (Arun Sharma)

Practice mock tests

English

5 year LLB- Word Power Made Easy by Norman Lewis

Any general grammar book

3 year LLB-

Word Power Made Easy by Norman Lewis

Any grammar book of up to class 12 level

Maths only for 5 year LLB- NCERT

Also read daily newspapers and solve mock tests and sample papers.

https://www.google.com/amp/s/law.careers360.com/articles/how-prepare-for-mh-cet-law/amp