Welcome JWLange!
Ries has long time retired from LibreCAD. Maybe he read this, then he will get in touch with you if he is interrested. Otherwise I recommend to not bother him.
Meanwhile you can search on Youtube for LibreCAD videos or browse our Wiki to get used to LibreCAD.
Our online manual is more kind of a reference, but has also some basic introductions.
Except for Youtube, everything is linked on our homepage.
Armin
investing less than half an hour into Search function can save hours or days of waiting for a solution