In 1989 Network Waitangi published a Questions & Answers book about the Treaty of Waitangi. The book has been continually revised, most recently in 2016.
Download for free here: Q&A 2016 online
A hard copy of the book is available for purchase for $5 + post costs from Network Waitangi Whangarei.
To purchase send an email to firstname.lastname@example.org.