Video Bridge / Grundtvig Workshop /
|Disclaimer: this is now still a link collection; we are not endorsing the actuality or useability of everything, but try to get some overwiew about some building blocks that we can reference to. (Thanks to Helmut Leitner of drawing attention to this possible misunderstanding)
Susan O'Donnell from Canadas http://videocom.firstnation.ca has drawn our attention to this online reference: This online book provides links to websites that either teach you how to make a video, or where to show your videos. It is not a video portal, but provides a list of portals and a wealth of information. 
Europe-wide media training project with many overlaping learning materials.
The essential information for producing a good TV-like show - aka series of online videos that attract stable audiences,
The whole tutorial is in Video. Experts of Swiss TV give insights in the basics of their profession.
A very good navigation makes this a five star project. Unfortunately you need to understand Schwizerdütsch!.
also in German: Slashcams Top 6 Mistakes of a Beginner in Making Video. Slashcam is a very content rich German community.