as the title says. I want to load in a bunch of textures at once. I also want to delete the standard SH3D textures too. Where is the texture directory or how can I import a bunch at once?

Also, does anyone know any websites to get more textures for farm house style modern homes? Or actually I'd rather have a website that is categorized by the building like interior paint, exterior siding, roof, bathroom, living room, etc... ? categorized specifically for a house? I don't know all the terms used for house materials like siding and stuff, so a categorized site would help me a lot.