While we wait very patiently for the return of Cornucopia3D.com E-On has created a new site for their software as well as having an artists gallery and some tricks and tips videos.
https://info.e-onsoftware.com/learn
You’ll find lots of free tutorials at Geek at Play, these really are highly recommended and you can also buy training DVD’s as well as textures, objects and more in their store.
Vue Tutorials
http://www.geekatplay.com/
In this title, Chris Stoski demonstrates his techniques for creating a complex matte painting. He illustrates how a matte artist utilizes Vue for 3D modeling, texturing, lighting, photographic reference materials and digital painting to complete a beautiful and efficient matte painting.
Matte painting production techniques.
Renderosity has several Vue tutorials, also a great place to post your work and purchase models.