Illustrator - guides and cheat sheets
a few extra resources for learning how to do things in Adobe Illustrator
Here are some guides, charts, posters, other graphic presentations of tools and cheats to get around Illustrator quicker, which will give you more time to focus on the work itself.
Illustrator User Guide by Adobe - the official online reference guide for how to use the software.
Adobe Illustrator Default Keyboard Shortcuts from Adobe Help - charts and notes on what keyboard keys will help you work quicker.
Getting To Know the Illustrator Toolbox - a breakdown of the different tools and what they do.
Adobe Illustrator Cheat Sheet - different tools and shortcuts in a nicely presented format.
Tool Galleries from Adobe Help - a visual breakdown of the different tools with links to dig deeper about a particular tool.
The A to Z of Adobe Illustrator by TutsPlus - a good list of terms and tools that you should know. Includes many links to tutorials related to specific tools or concepts.
update with new links and sources