You can go to Rhedd's site to get his skin mods and some tutorials. You can go to Thelys' list of mods for more mods. Or even Morrowind Mods for, well, mods!
There is a contact page for Rhedd and I think most of the authors on Thelys have their contact info up with their mods.

For less stress on all the authors, you could e-mail me all the questions and I will send a big email to the authors and they can send an email back to me and I'll filter it through to you guys. Find out where to e-mail me in the Faq!