Here some of the best books to figure out your calling as a Ward Mission Leader.
Preach My Gospel – Elder Ballard just asked all of us to read out of Preach My Gospel, the Manual for missionary work in The Church of Jesus Christ of Latter-Day-Saints and to share what we are studying with our full time missionaries.
The Power of Everyday Missionaries – Without question where you need to start if you are a Ward Mission Leader. In fact, the best thing you can do is to get a copy of this book for every member of your Ward Council and any families in your ward that have even an ounce of the missionary spirit (or missionaries in the field.)
Drawing on the Powers of Heaven – This may be the best book ever written outside of the scriptures on how to find your faith, increase it through personal righteousness, and actually apply it in the real world. It is one of the most published books in the LDS audience.
Hastening the Work – This book is primarily for Bishops, Ward Mission Leaders, Full-Time Elders and Sister Missionaries, and Quorum and Auxiliary Leaders serving in Wards and Stakes of The Church of Jesus Christ of Latter-Day Saints.