If this book is being used by groups during Lent then the following questions might be useful discussion starters. I am suggesting a way of reading the book and discussing it over five sessions.
Begin each session by asking these questions:
Allow for a time of silent reflection. Allow people to speak in turn (if they wish). Collect together the questions people bring.
Then follow the questions for each session, making sure you also deal with the questions people have raised themselves.
Finish by reading the passage from Scripture set for the session.