I just joined the group and just began using QCad. I've used other CAD/CAE S/W in the past as a part of my job, such as Bentley Microstation and various products offered by Intergraph Corporation back in the 1980s and 1990s. I've already been able to make a pretty good start in QCad 2.0.5 Community Edition on Linux, once I was able to figure out how things work with the command line. So far, I'm pretty impressed wit the product.
I look forward to the fellowship of the forum.