In this series of books, Jerome Berryman doesn't make any universal claims, such as "Everyone should do Godly Play, and this is exactly how they should do it." Godly Play isn't something that everyone can or should do. You will need to practice these lessons, use them with children, reflect on them and do them some more before they will be yours. This is especially important, since all we can really teach the children is how to enter the language to be more fully in God's presence. How can you explain that? You have to show it.
In Volume 1 of The Complete Guide to Godly Play, Jerome Berryman provides many opportunities for you to practice and reflect on this art.