AAU site to register player membership: https://play.aausports.org/joinaau/membershipapplication
Eastside Travel League: www.eastsidetravelleague.org
https://www.positivecoach.org : Positive Coaching Alliance is a national non-profit organization with the mission to transform the culture of youth sports so that youth athletes can have a positive, character-building experience. This is an excellent resource for parents and coaches on ways to have excellent communication and increase our chances for a successful season.
Concussions in Youth, Cordisco & Saile: https://www.cordiscosaile.com/concussions-in-youth/