For me, as a beginner in Freecad and 3d modelling I kept being unable to interpret/remember all the tool icons, and remember the shortcuts while learning.

I found this command palette that helped me discover the different commands and actually get to (beginner) proficient.[0].

Again, no relation, but it's what made it stick for me after a few aborted learning attempts. (and I had a lot of fun with freecad! Especially by my second or third model where I could actually just sit down and start modelling without having to learn any extra things. Now I just need an excuse to find something else to model...)

[0] https://github.com/ddfisher/FreeCAD-CommandPalette