Tutorial anywhere for demonstrating a minecraft style block placement script?

Unity Engine
1

Does anyone know of someone who has a tutorial on something like a minecraft style block place/delete script on a virtual grid? Would be very useful to me, thanks!

2

http://forum.unity3d.com/threads/192954-CoreDev-Creating-Voxelised-Worlds-(Like-Minecraft!)
http://forum.unity3d.com/threads/198651-Tutorial-Procedural-meshes-and-voxel-terrain-C

3

Thanks for the great reply!