The youth sports program I volunteer for works with an organization called Positive Coaching Alliance (PCA), which provides training for coaches of young athletes. We have been very happy with the quality of their presentations to our volunteer / parent coaches. PCA provide a framework and series of strategies that help coaches provide a higher quality experience for the players.
The founder of Positive Coaching Alliance is Jim Thompson, a faculty member with Stanford University and the author of a number of books including "Elevating Your Game: Becoming a Triple Impact Competitor". Below is a presentation Jim did about the positive (when executed correctly) impact of youth sports, I could not agree with his sentiments more. In fact, this site exists because of a strong belief in the power of sports to help guide young people in the right direction.
If you are involved in a youth sports program as an administrator, I recommend you to check out Positive Coaching Alliance, they are a fantastic resource... they understand what it's really all about