Dear Aspirant,

For preparing for B.Arch For JEE Mains, you can refer the books are study materials that are referred by the JEE mains web Portal.

books like,

• A Complete Self- Guide for B.Arch Entrance Examination- By P.K. Mishra ( Arihant),
• Steps to Architecture (NATA) B.Arch. Entrance Exam- Nimish Madan
• B.Arch/NATA/JEE Main – Offline Drawing Test – Nimish Madan
• B.Arch Entrance Examination JEE Main Paper 2 and NATA- Solved Papers and Practice Tests – Wiley Editorial
• Complete Architecture Entrance Guide – Ashok Goel and Arjun Kamal

Hope this will help you, for more information related to exam details, refer the portal, (https://jeemains.in/)

Hope this will Help you, All the best!!!