The book Deep Talk by Tuula Valkonen is currently available in Finnish and contains information on the method and resources. If you are already a Godly Play trainer, this book will help you to start using Deep Talk by yourself.
It is available for 28,00€ online and through bookshops from Kirjapaja, ISBN 978-952-288-172-4
The English language version of this book is out-of-print and further information about the availability of this in the future will be available summer 2019.
Deep Talk 
Is this book available in English? I own a bookstore in western Washington in the USA and my Episcopal rector would like to get a copy and then possibly provide to other church members. – David Hartz, Book ‘n’ Brush, Chehalis, WA
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Yes there is Deep Talk-book in English. It is published By Kirjapaja, Finland. You could contact dir. Eeva Johansson.
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Yes, I am looking for the English version of this book to use as part of my research.
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Yes, there is a ‘theory and practice’ article now on this site.
https://deep-talk.blog/journal-of-deep-talk/
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