Coming Alive in Christ: Training for PC(USA) Elders and Deacons Based on the Constitutional Questions: "This resource has been created for the purpose of providing teaching elders/ministers of Word and Sacrament and other congregational leaders with content to adequately train ruling elders and deacons in their ministries with God’s people." Leader Guides are available for both a monthly training series or for retreat use. Access to this free material is through Equip PC(USA) Training; the link above takes you there.
Preparation for Ordered Ministry by Theocademy: "What does one need to know to be an effective leader in the Presbyterian church? These videos will explore and answer these and other questions about ordained leadership in the Presbyterian tradition." This series includes 13 sessions each with short video and guide great for use in a session meeting, retreat setting, or individual training/learning.
The Session Ref: Members of a mock session meeting learn skills for a productive session meeting in this humorous 7min video.