Strategies include "How to Encourage Cell Leaders" and "Reasons to Ask Questions" which both give not only guide in what to do but point out the intent of each task.
The first part of the book addresses the "habits" of the Coach - things you do for the group leaders. The last part of the book looks at the issues of being a coach - authority, diagnosing problems, visiting the groups, coaching meetings, and, my favorite, the coaching stages.
I've already applied the concepts from this book as I prepared a training session for leaders in my care in a para-church organization. I'll give it a 4 1/2 out of 5 star rating and recommend it for those new to coaching or in the middle level of supervising ministry.