How use there textures in Unity? I don’t know how put this textures to object. Textures are exported from dds textures (NVIDIA). I using Unity 5
You open the model in your preferred 3D modeling application (Blender, 3D Studio Max, Maya or whatever you use) and then create a new material there, apply it to your model, and set up the UV map. Then you export the model as an FBX file and in Unity, when you drag it into the scene, it should already have the correct material (which was exported along with teh model). If not, you can create a new material in Unity, apply the relevant textures, and apply it to your gameObject.