If I want to export my model with the materials, how can I do that? because when I import my model into Unity this appears without color, and the materials including in the package does not have color. Anybody know if in next tutorials we will see how to do that? 
I think it has something to do with Blender render and Cycles render?
But in the church section (07) you will build a building (church) and import this (with textures) in Unity. So be patient 
it will work !
Thanks for the information 
I am waiting for that 