The MRM website on The Miracle of Forgiveness will give a good overview of this book.
Use the witnessing guide included as an attachment in this article to help you reference some of the most important quotes found in Spencer W. Kimball’s The Miracle of Forgiveness.
In addition, you can listen to a a series on The Miracle of Forgiveness on the radio program Viewpoint on Mormonism:
The Miracle of Forgiveness (Spencer W. Kimball) Intro Chapter 1 Chapter 2a Chapter 2b Chapter 3 Chapter 4a Chapter 4b Chapter 4c Chapter 4d Chapter 5a Chapter 5b Chapter 5c Chapter 6 Chapter 7a Chapter 7b Chapter 8 Chapter 9a Chapter 9b Chapter 10a Chapter 10b Chapter 11 Chapter 12a Chapter 12b Chapter 12c Chapter 13 Chapter 14 Chapter 15a Chapter 15b Chapter 15c Chapter 15d Chapter 16 Chapter 17a Chapter 17b Chapter 18 Chapter 19 Chapter 20a Chapter 20b Chapter 20c Chapter 21a Chapter 21b Chapter 22a Chapter 22b Chapter 23a Chapter 23b Series went from January 9 to April 6, 2012 (Book review)
For a witnessing sheet that can help you find references from this book, see the attached sheet.