While searching the net and using the keyword AutoCAD  the yahoo search got back at my search, a site containing a clueless questions of the meaning of AutoCAD and the used of it. 

What exactly is AutoCAD? and what is it used for?, where can I find it useful?.

A question, which of course has their answers, coming perhaps from an AutoCAD practitioner himself/herself or a professional that has a first hand experience of the wonder of AutoCAD.

Well auto-cad (automated computer aided design) is a very powerful tool and very useful if its relevant. Engineers and architects use it a lot. You can obviously get a bootlegged copy of it cheaply but the real deal will set you a back a good few quid!, but I’ve used it and its a complex software but very useful if you’re in the field. You should download a demo and see how u get to grips with it.

So there you have it, an answer coming I think from a user who has benefited the use of AutoCAD. Well I can contribute some answers to give some more enlightment but I just thought this links has a more complete and detailed answer about the AutoCAD.