Hi kolanski,
I don't know much about blender but it should be a pretty simple process
- Import all the FBX you need on your blender scene.
- Create (at least) 2 new materials
- Add the provided textures to the diffuse channel of each material 👉Use one of the variations "...Var_A" on one of them and assign the "...DECO or _PROP" texture to the 2nd material
- Assign the "DECO" material to all the "DECO_..." named meshes
- Assign the "VAR" material to the rest
and that should do it :)