The Center for Missionary Mobilization and Retention focuses on researching missionary mobilization and retention, publishing its findings and training local church leaders and missionaries on topics which impact missionary call and missionary care. Their website contains several pages of resources, some produced by them with links to many other resources as well. Their host school, Trinity Bible College and Graduate School offers trainings for missions agencies and pastors and offers free continuing education for missionaries, allowing them to audit a graduate school class free of charge.
Velvet Ashes, a website designed to be an encouragement to women serving overseas, has a Leaving Home series which provides women planning an international move with weekly emails offering encouragement and advice, resources to help in the transition, and a community in the form of a Facebook group with others going through transition.
Ends of the Earth Ministries has a fifteen session video course, originally taught at Calvary Chapel Bible College, available for viewing on their website. They also have twelve audio training sessions on cross-cultural ministry and culture shock.