But really this post is just a link dump since I dont have anyway to translate links from work to home and don't want to find this junk again.
So Research for Endless Teraind Demo:
Box Filtering Height Maps for Smooth Rolling Hills
Concatenating Triangle Strips
Fast Computation of Terrain Shadow Maps
Real-Time Heightmap Self-Shadowing Using the Strider Technique
Simple Clouds Part 1
How to Render Landscapes
Normal Computations for Heightfield Lighting
Super Frustums