How to get started;
In the game object menu go to 3d object then click terrain
in the hierarchy click on the new terrain (should be at bottom of the list) you can also use the terrain provided with CF but the changes will be subtle
in the inspector click on the wheel and adjust the size of the terrain
in the project window find the terrain tool kit folder click the arrow for the drop down and find TerrainToolKit it has a c# symbol next to it. Click and drag into the inspector under add component.
Now your ready to begin. So far I have only used fractal, smooth, and normalise. Not sure what Voronoi or Perlin does.
Select fractal, then presets if you want you can choose between none, rolling plains, rough mountains, and add noise.
You can also adjust delta and blend.
Then hit generate fractal terrain. If you don't like it make some adjustments if you wish and or hit generate again and again and again until you get something you like. keep in mind that this is still a rough draft. You can bring the elevation separation closer when you normalise.
Next you can mess around with erode and smooth if you desire, then normalise the terrain.
Last step is to add the textures so click texture then click add texture. you can add 5 textures plus a cliff texture.
Hit select in the checkered box to select a texture. If you're using the provided terrain the textures will already be filled in
if you use two or more textures you can adjust at what height range they appear. Hit apply procedural texture. If you don't like how it turned out make some adjustments and hit apply again. Rinse and repeat until happy.
Put a screenshot so you could get a visual, but alas it didn't show up in the post.