I've put together an introductory exercise for noobies who don't seem to be able to get a foothold on Terragen 2, especially those who find the learning curve too steep. I hold their hand (metaphorically speaking, of course (he says, deepening his voice)) all the way to the top of the mountain they will be creating. By the end of the journey the user will have had hands on experience of all the basic shaders, and should be able to confidently begin creating their own scenes. It stops short of adding objects to the scene, the intention being that the user only needs the program itself to build the scene. It is compiled in pdf format for ease of accessibility. I've included a pic of the scene the user will be creating from scratch.
I've posted it here with the intention of creating a link to it from the Terragen Wiki page.
Thanks, John