Hey Vinit

Consider these books.

These are some of the books..

Pathfinder for NDA & NA Entrance Examination

For GK- Manorama Yearbook 2015 by Mathew M is Best.

Mathematics for NDA and NA: National Defence Academy and Naval Academy by R S Aggarwal

Objective General Knowledge & Current Affairs (Level 1) : Useful for UPSC / State PCS / CSAT / Bank PO / NDA / CDS / MBA (English) by Disha Experts

NDA INA Practice Papers: Conducted by UPSC (English) by Sachchida Nand Jha

All the best..

HI VINIT

FOR PREPARATION OF NDA YOUR BASIC CONCEPTS MUST BE CLEAR.GIVE PARTICULAR FIXED HOURS TO THE SUBJECT.SOLVE ALL THE PREVIOUS PAPERS.TAKE THE PROPER DIET FOR MEDICAL TEST.READ PATHFINDERS IF YOU HAVE ENOUGH TIME.I PREFER NCERT BOOKS .ALL THE BEST

THANKS

I would suggest you to go through the below tips as these would be helping in your NDA preparation -

Paper 1: Mathematics -

To prepare for this section, the first and foremost requirement is to have clarity in concepts so you are advised to work on it properly as the questions will test your basic understanding of the concepts.

Paper 2: General Ability

Part A English -

To be well prepared for this section, read English newspaper daily, learn new words, go back to basic grammar and learn the rules thoroughly. Also, try to attempt more number of english tests as such tests are easily available online.

Part B: General Knowledge (GK) -

To be a good command on this scetion you are advised to follow the news updates regularly, be aware of the latest happenings in the field of sports, arts, literature, and the like. Also, read about the current economic status and the complete scenario, recent and past policies of India and neighbour countries.

Personality and Intelligence Test -

This test takes place to check the qualities like sense of responsibility, reacting to situations, social adaptability, team work, etc. To prepare for this test, you can start practicing psychological tests that enable you to know yourself.

Good Luck!!!

solve previous year papers and work hard with a proper timetable.

Work hard, Nothing is impossible.