A free open-source video editor, Shotcut. New to me, but currently at version 18 and thus quite polished. It has a set of Tutorial Videos which also come in German-language versions. It has a less-than-inspiring website, but according to the reliable WebUser magazine it’s a good choice…
“Its interface feels instantly familiar and is very easy to use, and it offers nearly all the editing features you could wish for. … simple enough for beginners to master, but it also has plenty of advanced features” — WebUser magazine, end January 2018.
Carrara 8 is DAZ Studio's official 'big sister' software.
Carrara loads all DAZ and Poser characters and scenes,
and supports LuxRender for top-quality realistic rendering.