In xoopscube.org, Herve pointed interesting URL for me. That is "XOOPS DEMO KRIS tutorial page". This page includes many excellent tutorials.
The other day, I have seen excellent video tutorials about Blender and Wings3D. Those tutorials are from France, if I'm collect. Japanese people don't like making video tutorials than writing regular documents. (But, most Japanese people don't write documents, too...)
But, I think that video tutorials are good self-study contents for every people. And, I'm jealous of Blender and other OSS which have enough video tutorials. :)
Therefore, I want to add more video tutorials to XOOPS Cube community!