PokeMinn’s prize payout calculator: A quick-and-easy calculator to determine a prizing option for tournaments. This is by no means the only prizing structure that can be used, but one that has been popular among players.
PokePopCast: A video series covering topics for the TCG, including many that are important for Judges and Tournament Organizers
The Compendium: The Pokémon TCG Rulings Compendium is a fan-compiled listing of all official TCG rulings. All rulings listed here are official, and the site is endorsed by TPCi.
Ask the Rules Team: A forum where rulings can be requested that are not already in the Compendium. Responses in this forum can be regarded as official.
Judge Manual: While slightly outdated (last updated in 2012), this manual serves as a guide on how Judges should act in different situations.