Biblical Training offers some good courses, lectures, and articles on a variety of topics including Biblical leadership.

Dave Grisanti of Ministry Training International travels around the world to speak to pastors, Christian leaders, and missionaries to provide training and encouragement.

Claybury International, a ministry of One Another Ministries, offers articles, downloadable e-books, and free online courses on developing leadership skills.

Sharpening Your Interpersonal Skills Workshops are provided globally in many different languages and in online format to provide Christian workers with skills in relating well with others from other cultures.

Recommended Books and Articles:

Leaders of Character by Dave Shirley available at Lulu

Agape Leadership by Alexander Strauch and Robert Peterson

Spurgeon on Leadership by Larry J. Michael

A Leader After God's Own Heart by Jim George

The Elements of Preaching by Warren Wiersbe

When Narcissism Comes to Church: Healing Your Community From Emotional and Spiritual Abuse by Chuck DeGroat

Escaping the Maze of Spiritual Abuse: Creating Healthy Christian Cultures by Dr. Lisa Oakley and Justin Humphreys

"Fifteen Steps for Expositional Sermon Preparation" by Andy Deane on CalvaryChapel.com

Help Your Missionaries Thrive: Leadership Practices That Make a Difference by Ken Harder and Carla Foote

Based on the ENGAGE research project by Global Mapping International, Harder and Foote provide practical information and advice to missions leaders on how they can help their missionaries thrive.