From the introduction: This document is a guide to getting started Dungeon Mastering games within the D&D Adventurers League, an official organized play program for Dungeons & Dragons. ... This document covers Dungeon Mastering D&D Adventurers League adventures set in the Forgotten Realms, which includes all Adventurers League adventures except those from Eberron: Oracle of War (EB series) and Ravenloft: Mist Hunters (RMH series). Those storylines have their own rules for character creation and advancement.