Where is Daz's Iray materials library?

In the Octane renderer for Daz Studio, there is an area where it shows a lot of materials that you can just drag and drop onto surfaces. (though many of them do not work very well) I have yet to find an Iray material library equivalent in Daz where I can just drag and drop textures onto surfaces.

I must tediously peruse though thousands of files and folders on my hard drive(s) for all kinds of various files like normals, bumps and glossy etc and piece them together and hope a texture comes out of it.

Isn't there a material library somewhere in Daz where I can just pick gold or colored glass or a volume like in Bryce?

I drag and drop materials from Octane into the render window and they often cover the object satisfactorily and I cannot find out how to get the new object in the Octane window into the Iray render window. 

I know I am looking for an easy way out of learning how to use the surfaces tab but I am just looking for simple textures like gold, wood, plastic, fabric and glass etc. I have bought all of these textures on objects already. Why should I need to build them from scratch?

I have bought tons of models from the Daz shop with these beautiful textures on them and it is like finding a needle in a haystack to get one onto an object's surface.

There are tons of tutorials on how to use Substance and such how do I get something to scan my drives and find all of the textures I have bought on various models and let me just drag and drop them onto a surface in Iray and then figure out later how to tweak it and map it the way I want it?

I really love the way Iray renders, it is so realistic, but finding/creating textures is slowing me down to a halt.

Is there something I am missing? I looked at the shader builder and shader mixer and that just takes me down an even steeper learning curve. This is like assembling pixels one by one into a bitmap…

Where is the basic texture library for Iray in Daz Studio?  Can I buy a plugin that will look on my hard drive and assemble textures together into a somewhat useable Iray material library? Is there a material library that I am missing somewhere in Daz Studio?

At some point I will learn to build materials from scratch, my mind is resisting that like trying to learn a new language. How do I save them and recall them and assemble them into a quick reference library?

How do I peruse through lots of textures without having to load them in bits and pieces one by one?