Part 1 of the User Guide for Terragen 2 is now available on the Terragen 2 Help page of our website:
http://www.planetside.co.uk/content/view/31/47/Part 1 covers fundamental concepts of Terragen 2, as well as a complete overview of the user interface.
Part 2 will be available soon, consisting of information on working with each scene element (terrain, lighting, etc) as well as rendering, animation, etc.
- Oshyan