If you are preparing CLAT then it would be helpful for MH CET law. You can also prefer Career Launcher Material which is very good for the programme. You can also refer Arihant's publication & Universal Guide.

Here are some preparation tips you can follow given below:

Know the syllabus. Know the paper pattern. Know the sections. Know about the exams to give. Know the prospects of it in future.
Make your study plan in two parts, one is study plan and other is routine plan of your daily activities.
Join Mock test to analyze your performance and do practise as much you can.

Good Luck!