Notes are quick ways of revising any concept. Notes need to be personalized for a better revision process.  A good summary note should capture all relevant information as needed for better preparation of exams. Preparing for any exams should involve a well-designed approach and quick revision to memorize the concept is an important part of the same. 

Students should start their preparation by making a note of all the chapters that are there in each subject, a reference note may be sufficient for many or can act as a base to personalize it better and could be very useful.