I've crashed and burned in FreeCAD each time I've tried it (to be fair, that's happened in every other traditional 3D CAD program I've tried except Dune 3D) --- hoping that someone will update:

https://magazine.raspberrypi.com/books/freecad

for the new UI --- any word on that? (Just an annotated copy would be great)

Apparently, one of the devs from Ondsel has done a soft-fork and is stumping for funding:

https://www.astocad.com/

(but he wasn't interested in the feature I want, see below)

That said, I managed to make it through the tutorial for Dune 3D twice now (after a fashion), and I think that the tutorial needs to do a better job of explaining concepts from first principles: https://github.com/dune3d/dune3d/discussions/118 and https://github.com/dune3d/dune3d/discussions/252 c.f., my own attempt to explain the commercial CAD/CAM software which a company I work for sells/supports: https://willadams.gitbook.io/design-into-3d/2d-drawing --- is there a really good book which explains fundamental 3D CAD concepts and terminology?

I'm way more successful w/ OpenSCAD (usually by way of BlockSCAD: https://www.blockscad3d.com/editor/ or https://github.com/derkork/openscad-graph-editor) and the available printed books help a lot, though I've been using the new Python integrated version:

https://pythonscad.org/

https://github.com/WillAdams/gcodepreview

The thing which would really help me in FreeCAD would be having a graphical programming workbench as a first-class citizen, something like Grasshopper for Rhino3D, or the node editor in Moment of Inspiration 3D, or Dynamo as used for AutoDesk software --- any word on that?