In order to prepare for NID DAT Entrance Exam you can prfer the below given books.

NID DAT book by R.S. Aggarwal (aptitude section)- NID Workbook

Design drawing by Francis D.K.Ching- NID (B.Des.) Entrance Books and Test Series

Basic Rendering from Robert W.Gill- Guide for NID

NID Mock Test Series Success Master- NID entrance Examination

You can also refer below given article for the exam preparation.

https://design.careers360.com/articles/best-books-and-study-material-for-nid-dat-2019-preparation

Good Luck!