German based discussion platforms
Foren von cad.de
Lisp Tutorials
Auto- and Visual Lisp Tutorials
Unfortunately mapcar died in 2006. But his tutorials are certainly the most readable in the German-speaking world.
Partnersites
Ein- und Ausblicke, Infos und Meinungen, Tools und Tipps zu AutoCAD und AutoLISP
CADmaro
große Sammlung diverser dxf Dateien zum kostenlosen Download
dxf-downloads