Hi Ravensilk,
I have recently started working with a free cad program called DoubleCAD XT. It works well with sketchup for setting out plans or parts schedules etc. You can check it out at
DoubleCAD XT
I have been using cad programs for quite a few years now and have started combining cad with woodworking for my projects (I'm very much a newbie with woodwork

. I have a few video tutorials on my website that runs through the basics of using doublecad and sketchup in particular but the principles are the same for most cad programs. You can find those at
CraftyCAD
I haven't tried Draftsight but I will definitely check it out. Another free cad program I've just installed is called FelixCAD I am hoping to do a review and some videos on that one too. That one is at
FelixCAD LT Features
Sketchup is worth familiarising yourself with in any case as it is great for roughing out designs quickly and easily or creating production drawings.
Regards,
Cam