Illustrator

Adobe Illustrator
Vector based software with industry standard drawing tools and type controls. Provides information on the current build and integration capabilities.
http://www.adobe.com/products/illustrator/

Adobe Illustrator Resources About.com
Resources for all versions of Adobe Illustrator including tutorials, plug-ins, actions, brushes, templates, training and support resources, patches and updates, FAQs, tips and tricks, and other information.
http://graphicssoft.about.com/cs/illustrator/

Ergodraw
A digital illustration resource, focusing on Adobe Illustrator.
http://www.ergodraw.com/

Interactive Training CD
Print Preparation and Trapping in Adobe Illustrator provides training to build and trap text, gradients, knockouts, overprints. Illustrator is commonly used for illustrations, logos, cartoons and line art.
http://www.cornermark.com/training/illustrator.html