The Prime Minister spoke to the students and parents of the country in his monthly Mann Ki Bath address. There are numerous issues of national and international significance that he could have talked about. I admire that he spoke about learning discipline and how to face examinations.
Pieces of advice and guidances on cracking examinations and how to score high are plenty. Coaching to get admissions to higher education courses is a big business.
“Learning How to Learn: Powerful mental tools to help you master tough subjects” is the most popular course from Coursera. I have benefitted by following some of its guidelines. I also highly recommend the simple book A Mind For Numbers: How to Excel at Math and Science (Even If You Flunked Algebra) by Barbara Oakley.
If you would like to read intense books on the subject, then read The Fifth Discipline: The Art and Practice of the Learning Organization by Peter Senge.