The Best Teacher of the Game is to Play the Game. (Source unknown)
You can do all the classroom teaching or locker room coaching possible, but there is no better place to learn than in the midst of the activity. Any teacher will testify that he or she really began to learn their subject when they started teaching. What a great lesson for life! Prepare well but get into the action to really understand what you need to know and how to learn.
Keep putting into practice all you learned and received from me—everything you heard from me and saw me doing (Philippians 4:9).