Where can I find good introductions about using LibreOffice?

Where can I find a good collection of tutorials about using LibreOffice?

Preferably as online videos showing and teaching what the software is capable of, giving a good overview of all the features along the way. Those can then be played along with the viewer repeating the step on his own installation.

EN: http://wiki.documentfoundation.org/Documentation/Publications

DE: http://wiki.documentfoundation.org/Documentation/de#Verf.C3.BCgbare_Benutzerdokumentation

That is great! But I am more looking for concise overviews/tutorial rather than deep, detailed documentation.

Then you might like this. : (I am not familiar with newline = shift enter, I will look for more…)

[de]

http://www.vidorial.com/videos/office/libreoffice/

[en]

http://plan-b-for-openoffice.org/index

BUT
I do not know the quality of them, but they have good traffic [en] / upvotes [de]

Category: LibreOffice - I Learn Things! is looking great too!