Without study materials no learning takes place. The study materials have to be distributed. The professors receive the study materials and they distribute them to the students. Not every and any materials are apt for student consumption. This depends upon the design of the materials. The NCERT materials are apt for students. They are designed and produced by professors who are specialized on the topic. Most of them go through several years of studies on the topic. Hence, the writer has one recommendation to students: review the materials and only if it is produced with dedication and hard work, it is to be bought by the students and used. Generally, the NCERT materials are well prepared and ready to use. The students should refer to other materials too. Only by using several materials sources do the students get an overall view of the materials and the topic. The students should get used to different materials and sources. The writer used all the materials available on the subject and guaranteed a first class in the exams.