
Here's a list:
http://cad.about.com/od/Personal_CAD/tp/Five-Top-Free-Cad-Packages.htm
I have a free copy of AutoCAD, but I guarantee that doesn't fit your requirement of short learning curve.![]()
I used Draftsight as well. It is only a 2d program, so if you need to work with 3d you're out of luck.
I'm pretty sure that 2D will be fine, but having never done this sort of thing before, I'm not 100% sure. It seems that in 2D you would just make a separate drawing from each aspect, wouldn't you?
What are you going to draft?
Important tip:
Make sure whatever computer you are using meets program requirements. It is very frustrating to deal with a cursor that doesn't quite keep up.
I'm on a Win7-64 box with a dual core 2.4. Not modern, but not ancient either.