Upcoming Events: Wed 9/17: Mega Evolution Prerelease #2 @ 5:30 pm
Official Pokémon Resources (Archived resources for historical information)
TCG Competitive Play Insights and Strategies
Online Decklist Generator for TCG Tournaments: RK9 Labs decklist generator.
Or you can print out a paper copy to handwrite your decklist:
From Pokemon.com - select the Play! Pokémon Deck List (8.5x11)
Pokémon TCG Alternative Play Handbook
Pokémon Online Trading Card Game
Video Game Battle Team List.
League Leader Playbook