Valve has released the official L4D mapping tutorials.
http://www.l4d.com/LevelDesignDocs.zip
Download and extract the .zip, then open index.html
This contains a ton of helpful info and tutorials for:
- Getting Started
- Your First L4D Level
- Ladders
- Visibility
- Nav Meshes
- Checkpoints
- Checkpoint Rooms
- Outdoor Levels
- Level Organization
- Level Standards
- Clip Brushes
- Elevators
- Panic Events
- Breakable Walls
- Finale Events Part 1
- Finale Events Part 2
- Finale Events Part 3
- Additional Finale Components
- Nav Flow
- Advanced Nav Editing
- Versus Maps
Note that some of these tutorials depend on the SDK, which isn't out yet.
source: list.valvesoftware.com/pipermail/l4dmapper
Thanks to arramus for posting this up in the Forum!




