Tim Wescott writes:

Ages ago I was on here asking about CAD programs.

I just finished CAD-ifying a set of drawings for a 1/10th scale Laird
Solution.

I used QCAD, because it's the only CAD program that Ubuntu lists as
being 'native'. I couldn't get my head wrapped around using it (I
suspect it was a problem with CAD in general, not QCAD). I found a
tutorial on the web on how to do one specific thing which opened the
window, now I'm charging along with it.

It's only 2-D, but it's free, it makes DXF files, and it's available
for both Windows and Linux.

I just finished using it to draw up a patio for my house (waiting on an
estimate from the contractor now....). My experience was the same as
yours; I found its interface to be extremely counterintuitive, but I
don't know whether other CAD packages are the same. I also found a
tutorial (darn! It isn't bookmarked -- I wonder if it's the same one?),
and also was able to make very quick progress once I'd done that.

I need to spend some more time looking for an equivalent 3D program,
though....