There is a very old and unsupported 2D program called Draft Choice for Windows. This was the very first CAD program I ever used and I found it quite palatable and easy to use, especially as there was an excellent teaching guide to it, bearing in mind that at the time I knew absolutely nothing about CAD.
The problem that I had was that as I upgraded my computers, the program became more and more unreliable, however, I understand that it works absolutely fine on modern machines. Unfortunately, this unreliability meant I had to look elsewhere otherwise I would still be using Draft Choice.
Draft Choice was originally created by the same people (Trius Inc) who created the spreadsheet program As Easy As, however Trius changed direction some years ago, stopped supporting both programs and consequently made both programs completely free to download along with the relevant free licenses.
Peter G. Shaw