Hi Kanishka,

NIOS has its own pattern and text books, since this is the largest open board of the country NIOS provide course text book to each student by post to their home. If you do not receive the study material from NIOS you may approach to your study center selected at the time of admission. Sometime books are sent to Study centers and student need to collect the books from their study center.

OR

You can download the books from their online portal.The link for the online book download page is given below:-

https://www.nios.ac.in/online-course-material/secondary-courses.aspx

Hope this will help,please feel free to ask if you have any further queries.

Thank You.