Hi 
if you’ve installed the “Carrara native content” into the same location as the main program,...then the shaders should be automatically showing up in the carrara browser.
if you’re looking for the individual texture maps, they should be in the Carrara / presets / shaders folder, along with the carrara shaders.
You should also be able to open a shader in carrara, then go to the shader editor, and hold your mouse over the name of the texture map used in the shader, and a yellow info tag will pop up and give you the full address of the image,
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