Download Youth Ministry is a resource for youth pastors to run their youth ministry from sermons to games to trainings. Last year, they released a whole training series through a part of their store called DYMUniversity to help train up staff and volunteers. One of those episodes is an 18-minute video called Suicide Detection and Prevention which they made available for free.
It’s put on by Craig Lomax and Josh Griffin with a foreword by Kay Warren. I honestly hope that you go check it out. The church I volunteer at is going to be putting together a luncheon for our youth ministry team, show the video, and then our campus pastor and myself as a licensed professional counselor will be on-site to have a conversation and Q&A afterward.
This series is part of a larger youth ministry training series for volunteers which also includes an entire episode on mental illness. If you are interested in seeing the whole series which you can get for $25, check it out here.