How do I use models from here in Blender?

[Nidonemo]

You can import the OBJs in blender by going to File>Import>Import Wavefront Obj (I think, anyways, I'm not on my laptop so I can't confirm).
That's about the extent of my knowledge with blender.  No idea about textures and the like.
E: Mtl files are also associated with OBJs, they contain texture paths for the model.

Unfortunately Open Wavefront Obj doesn't work (selected an obj file, opened, but nothing appeared on the screen), and there's no option listed for Mtl either.