I have generated a building, from an Open Street map using Blosm for Blender.
Additionally, I have also used Buildify 1.0 to generate the building textures and architecture.
And as an output, I have got the following building.
In the same way, I have to export the other various buildings, the textures generated from Buildify are similar for all the buildings, So I would like to try out the different textures and materials for some buildings.
I have to use the building structure from the OSM building data.
But with very limited knowledge about the Blender, I am not able to head start with changing the textures, and building materials.
To generate the building I have followed the following tutorials. https://youtu.be/gKZ074ISG_M?t=354
My question is how to start with changing the texture and materials of the building generated by Buildify from the OSM building data.
I have attached the blender files too.

