Double cad is offering a good tutorial for $20.00 after discount.
There are more than 2 hours of training videos on using DoubleCAD. The way it is presented, it makes it a lot easier to get some of the basics down. I purchased the training videos, and they are a big help.
Another good source of help is the web site. Go to DoubleCAD forums through the internet page on the CAD program, or go here.

http://forums.doublecad.com/