I too, am using SU as a pastime. I'm retired 25 years, from railroading. I was a Locomotive Engineer at a time when the Federal government allowed us to work 16 hours a day, 7 daya a week. It has taken me 25 years to slow down. I dabbled in 2D Cad for all that time. I think I've used almost every free Cad program there is. I bought Autocad, big mistake, very large learning curve. Been using SU for 10 days and I am realy impressed. I have one question to start with. Is there a published opinion of the sequence in architectual drawing. I've tried a few different things, that all make my journey harder after an hour or so.