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 teenage children, Liesl and Max. Marko's blog: whyismarko.com. Adam McLane is a lifelong student of youth ministry, a veteran youth pastor, and mentor to an ever-expanding web of students and adults. He is a partner at The Youth Cartel, a full-service consulting firm specializing in helping churches, businesses, and ministries connect with teenagers, young adults, and youth workers.

Adam and his wife, Kristen, live in San Diego, California, with their three children, Megan, Paul, and Jackson.