Hi
ty Cassy for all of this, for sure it will be helpfull for the helpers.
find some links that you can include in this page.
Sandbox
a complete tuto about how to help a wiki.
a help page about the layout for a wiki, but in french
Text in color
Text in color, another page
-Also i put on the forum a post that will help you, i hope, to put template in some category.