What's exactly a "Deep Exploration"?

If it isn't a problem, could u make a tutorial to me? I'm looking for more models to my SH3D, but always when I download one, it comes without any texture, then, it puts me down and I give up..
If you can try to explain me how to import models from archive3d.net to SH3D I'll be so gratefully!

(Sorry about my english, think it's so bad, but I tried, If you couldn't understand something, please tell me and I'll find another way to express myself)

Really thanks