Hello Aman, See as you are planning for NDA which you can give once you clear 12th (12th pursuing candidate are also allowed to give NDA). So would suggest to go through last 10 years question paper and try to understand the question pattern and type of query they ask. So that by the time you reach 12th you will be aware of what to read & study, and what not to...

All the best  

Hello Aman,

Starting an early preparation for any exam you dream to achieve success in, is really helpful. I would advise you to start your preparation as early as possible. To refer to more NDA preparation strategies, go through the link below.

https://university.careers360.com/articles/how-crack-nda-entrance-exam