UmpireHockey.org is a not-for-profit organization of field hockey umpires from across the USA. Utilizing the web, UmpireHockey.org will hold meetings, provide instructor-led training courses, and conduct umpire coaching sessions. Chapters are formed on a state-by-state basis. Get started by taking the UmpireHockey Online Umpiring Course, written and presented by Cris Maloney, is available online for $39.99. Available separately, you can purchases a copy of Field Hockey: Understanding the Game (one of the most highly rated books on the subject on Amazon.com). The book cost $14.99 plus shipping.