AutoCAD used to come with a free tutorial CD. It was very basic, no help to anyone who has ever used CADD software. But it will definitely get you rolling. Nowadays, the IT people install software, I never see the entire box, so the free CD might not be there anymore. Check with whomever installed your software, ask if there was a tutorial CD in the box...it used to be brown, entitled something like "ilearn" or "learnCAD".
Remember: The Chinese ideogram for “crisis” is comprised of the characters for “danger” and “opportunity.”
-Steve