Using Imported and downloaded materials and textures in Maya

Hello!

First of all i must say that i am quite new using Maya. I need help on how to import materials into Maya. My problem is that i downloaded some materials/shaders and their textures from the internet. When i go to the hypershade window i import the material (which is concrete) and it appears correctly but, when i add the material to my object it turns it black and when i render it shows the object black with a very reflective surface! And all of us know that that is not even close to representing realistic concrete. So that's my problem. Someone already told me that i needed to download the textures for that specific material and i already did. In the hypershade window, in the materials tab, the material appears, as well as the textures in the textures tab. If it's any help, i downloaded the material and texture from mrmaterials.com.

So, can anyone help me and tell the step by step on how to get the realistic concrete material on my object from the one that i downloaded?


Thanks in advance!