Here in the USA there is a series of books "(fill in the subject) For Dummies".
I have a copy laying around here titled "AutoCad for Dummies". This is a 1995 book for AutoCad release 13.
I'm sure there are updated versions as well.
I also have copies of AutoCad 2008 3D Modeling Workbook for Dummies 2008, AutoCad 2008 & AutoCad LT 2008.
There are many others as well.