This book explores what religious communities, of any faith, and especially their leaders, can do to mitigate the coming climate catastrophe. As such, I think it could be helpful.
First the good: There are some real, author-tested, suggestions on changing people's attitudes, habits and actions regarding our stewardship of the earth. The concrete actions range from liturgy changes to being arrested at a climate protest. This is a welcome change from many of this type of book which talk about the problem at hand with no solutions offered.
I can easily imagine this book being used by a faith reading group, as the chapters are short with thoughtful discussion topics at the end.
As for the bad: I'm not sure who this book is aimed at. I, as a lay person, am never going to use the sermon topic suggestions, for instance. On the other hand, there are those chapter discussions.
All in all, this is probably a good book for helping get faith communities move toward addressing the climate crisis on a community level.
The Appendix provides an overview of each of the chapters, which could easily be helpful. The notes are fairly extensive, if hard to get to in the edition I read. The index is weak, but at least there is one.