Hey,

Some important books are-

NATA Entrance Exmaination ( Architecture ) by P.K. Mishra
NATA Entrance Examination by Arihant Book
NATA Entrance Examination ( Guide ) by PK Mishra
NATA Examination ( Engineering Drawing ) by N.D.Bhatt and Pancha
NATA Examination ( Verbal / Non- Verbal / Reasoning ) by R.S. Agarwal

Other than books, you have to give some mock tests for your practice and analyse them same day for better preparation at regular interval of time.

Click here, regarding MOCK TESTS-

 https://engineering.careers360.com/articles/nata-mock-test