The only way to score good marks is to be consistent with your studies and practice as much as you can and you should be able to see good results no doubt.
About the ncert books for NDA exams you should read the books of following subjects: English, mathematics, economy, geography, polity, sociology and general science.
Answer Key | Eligibility | Application | Admit Card | Preparation Tips | Result | Cutoff
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile