In German:
thanks to @asmr-austria there are lots of German FAQs and Help Guides / tutorials already listed in:
https://steemit.com/deutsch/@asmr-austria/anleitungen-fuer-kw-44

in addition @the5kyliner explains how to exchange Steem / SBD to €:
https://steemit.com/steem/@the5kyliner/steem-in-bitcoin-und-euro-umwandeln-mit-wirex-und-changelly

@flurgx explains how voting works (votingpower):
https://steemit.com/hilfe/@flurgx/voting-power-verstehen
and lists a lot more links to German faqs / guides / help
https://steemit.com/deutsch/@flurgx/steemit-faqs-und-hilfe-sammlung-auf-deutsch

@afrog shows us how to create unqiue content for Steem:
https://steemit.com/deutsch/@afrog/hilfe-was-macht-unique-content
how to exchange STEEM / SBD
https://steemit.com/deutsch/@afrog/hilfe-wie-wird-aus-steem-geld-und-umgekehrt
what it means to power up and how it works
https://steemit.com/deutsch/@afrog/hilfe-wie-geht-uppowern
how to vote effectively
https://steemit.com/deutsch/@afrog/hilfe-hf19-wie-muss-ich-voten

and last but not least @andalucia explains how the @minnowsupport project works in German:
https://steemit.com/deutsch/@andalucia/hilfe-fuer-kleine-fische-minnowsuppurt

hoffe die Deutschen hier finden dort genug Hilfe