I Put My Face In The Blender

I know the likeness isn't very good, but not too bad for my first head model.

I've been learning Blender 3D at work. I'm contrasting my current understanding of skinning (UVing) geometry vs. the way its applied in Blender. I understand UVing and skinning just fine, but how do materials and UVs work in Blender and how are they saved and used in other formats. From the first apply though, I'm very impressed with Blenders UV capability. The fact that I can drag verticies around on the UV map is a huge win for me.