Well John,
i've been using TurboCad since it was first released in 1800 and went up to v 4 before the original makers went bust, then it was on both PC and MAC formats.
Since 1999 it was marketed by IMSI and they improved it from v4 to the current v10.
I currently use v7 - it was a free version from a PC mag

,great for BASIC designs and doing the details of joints.As for 3d

I still have to give it a try out.
Why so lazy, I learnt Tech. drawing to A level standard and find that 2d OK for my own use, 3d I tend to do freehand and colour in for client presentation.
Still my advise is get the free or very cheap version and start there.