Acadia - The RDNA Sky Dome did'nt work for me either.  And, from what I remember, Dr. Geeps tutorial is as much geered toward making a sky dome as anything else..  WIth Ajax's freebie all you need to do is load the Sky Dome Figure.  The ground plane is automatically positioned properly, and the dome huge!  Just e-mail for my material file, and apply that Collection, before you try to render the water plane...

And OK Matamtic is a little difficult, at first, but it just takes asking the kind Mr. Bagginsbill for his help.  When I did he was more than willing to explain how to use it, personally.  The beauty of Matmatic is that it is a language for creating Material files, more so than just the material files.

bagginsbill - Hello, I hav'nt forgotten my promise to write you a beginners tutorial!  Its been a couple months, but lets see if I can rememebr off the top of my head.

1.) DL MatmaticBeta1

2. ) Create two Materials Library folders named; MMdownloads(For Freebies), and MMWIP(For personally written scripts)

3. )  Open the Matmatic userconfig.txt and add:

"scan :Runtime:libraries:materials:MMDownloads*"

and 

"scan :Runtime:libraries:materials:MMWIP*"

3.)  Search RDNA and Renderosity for "Matmatic" threads, and the subsequent scripts:

Matmatic Announcement and discussion: http://www.runtimedna.com/mod/forum/messages.php?ShowMessage=228105

Matmatic Download: http://loftydesigns.net/Beta/Beta/MatmaticBeta1.zip

Parmatic: http://www.runtimedna.com/mod/forum/messages.php?ShowMessage=226110 

Parmatic SR3 Issues: http://www.runtimedna.com/mod/forum/messages.php?ShowMessage=234750

Threads where I've used these for special effects:

Deep Ocean Water: http://www.runtimedna.com/mod/forum/messages.php?ShowMessage=226110

Incidence SSS on Jessi: http://www.runtimedna.com/mod/forum/messages.php?ShowMessage=229578 (although I think I did that one wrong)

Algroithmic Eye Makeup: http://www.runtimedna.com/mod/forum/messages.php?ShowMessage=229726

Reptile Scales: http://www.runtimedna.com/mod/forum/messages.php?ShowMessage=228528

Goldfish Scales: http://www.runtimedna.com/mod/forum/messages.php?ShowMessage=233907

Procedural Bruises: http://www.renderosity.com/mod/forumpro/showthread.php?message_id=2760455

Furry Jessi: http://www.renderosity.com/mod/forumpro/showthread.php?message_id=2760455

 Polka Dots: http://www.renderosity.com/mod/forumpro/showthread.php?message_id=2774035

Monster skins: http://www.renderosity.com/mod/forumpro/showthread.php?message_id=2773712

Plaid: http://www.runtimedna.com/mod/forum/messages.php?ShowMessage=244503

Bricks: http://www.runtimedna.com/mod/forum/messages.php?ShowMessage=240354

Stars and nebulae: http://www.runtimedna.com/mod/forum/messages.php?ShowMessage=240500

Mixing nodes tutorial: http://www.runtimedna.com/mod/forum/messages.php?ShowMessage=237743

4.) Upon finding an interesting script, add a similarly named directory, within the MMDownloads folder.

5.)  Save that script, into it's folder, with the extension .mm1.txt at the end of the script file.

6.) Run compile.py, and all of the folders that had Matamtic scrips in them will now also have Matmatic Materials!

7.)  Examine the material file, and copy the script into the MMWIP fodler.  Make some changes to the script, and run the compile.py again, for more/new material files!