Texturing...

How to texture a huge landscape?

One way to do it is make a huge texture map in a paint program then apply it to the landscape. It would probably also be the easiest way to do it and the quickest if for the game engine.

Ive found the best way to texture a landscape is to find a nice grass texture, make a plane, and subdivide it. Then make my landscape and apply the grass. Then you choose seperate faces for mountains and apply a rock texture and so on. In a paint program you can meld the grass and rocks together.

yeah, another way -generally used in games- is to use tiled textures.