You can download the Shader Documentation here: https://www.dropbox.com/s/73r00fn9nhoykfi/Documentation_ShaderPack_Vol2.pdf?dl=0 For Inserting a Material into your Scene simply Choose "File --> Append"" Then Choose the given Shader Pack Blend File. Then Choose your Material. Please note that some Shaders need an UV Unwrapped Model (See Blender Wiki for more Information). For Inserting the free bonus Model of the Leather seat Choose "File --> Append"" Then Choose the given Shader Pack Blend File. Then Choose "Groups", there you will find the Group "Vintage_Leather_Sofa-1-Seater".