Editor Tutorial
Stop press!
Densming has created some excellent Video Tutorials on YouTube, which guide you through the process of creating a game. If you find videos easier to follow than text, check them out!
The "Getting Started with AGS" tutorials are here:
Part 1 - Creating the game, and palette setup
Part 2 - Creating your first room, and testing the game
Part 3 - Hotspots, edges and interactions
Part 4 - Objects, inventory and room options
Part 6 - Using the Sprite Manager
Part 7 - Views, loops, characters and cutscenes
Part 8 - Conversations and dialog
Scripting is introduced in a separate tutorial: