Mark Oestreicher (Marko) is a veteran youth worker and founding partner in The Youth Cartel, providing resources, training, and coaching for church youth workers. The author of dozens of books, including Youth Ministry 3.0, Marko is a sought-after speaker, writer, and consultant. Marko lives in San Diego with his wife, Jeannie, and two teenage children, Liesl and Max. Marko's blog: whyismarko.com.Brooklyn became a youth pastor in 2001. She's authored six books, and shares with thousands of students and youth workers every year. Likes: pizza, dessert, bike riding, dressing up, and treasure hunting. She leads the middle school ministry at Highland Park Church of the Nazarene. Her greatest joy is raising her two little girls with her husband Coy.