Dear Vedant,

In order to good marks in your board exam make sure your read NCERT books thoroughly. Solve all the exercises which are given at the end of each topic.

Give extra attention to the topics which carries more weightage in the exam.

If you want you can make your proper time table it will help you to complete your syllabus on time and you will get proper time for revision.

If you want you can make your impoartnt notes it will help you in revision.

It is very important that you clear all your doubts time to time. 

Refer previous year papers as well for your practice.

All the Best!!