The AutoCAD Resource Site  
   AutoCAD directory, including online magazines, user groups, newsletters, news groups, and tutorials.
   http://www.llpsite.com/

Cadopolis.com  
   Commercial portal for products and services related to AutoCAD, with add-ons, shareware, forums and links. [Requires Javascript]
   http://www.cadopolis.com/

Autodesk Point A  
   A second portal by Autodesk that helps designers to locate industry resources, with additional services for subscribers.
   http://pointA.autodesk.com/

The CAD Depot  
   A repository of freeware and shareware tools for use with AutoCAD and other CAD systems.
   http://www.caddepot.com/

The Autodesk File  
   A history of Autodesk and AutoCAD by John Walker, the founder of Autodesk.
   http://www.fourmilab.ch/autofile/

Adee's AutoCAD Answers  
   Answers to Frequently asked AutoCAD Questions.
   http://www.satelephone.com/~adee/aaa/

CAD Forum  
   Database of tips and tricks for AutoCAD, AutoCAD LT, 3D Studio, Inventor and other products by Autodesk and HP.
   http://www.cadforum.cz/

Autocadzone  
   Free AutoCAD help and tips, tutorials and video tutorials, and student examples of 3D models.
   http://www.eezylearn.pwp.blueyonder.co.uk/

Cadalyst: Bugwatch  
   A monthly column documenting old and new bugs in AutoCAD and their workarounds or fixes, where available.
   http://www.cadalyst.com/cadalyst/article/articleList.jsp?categoryId=3032