Both Photoshop and Illustrator enable you to record a series of actions that you may constantly repeat. After recording these steps you can play them back over other other images. They are extremely useful for any task that you have to do over and over again. These 124 Free Photoshop Actions to Boost Your Designs will give you an idea of what is possible
You can download the keyboard shortcuts from the links in Increase your productivity – Adobe Photoshop, Illustrator and Dreamweaver keyboard shortcuts as it contains all the keyboard shortcuts for Adobe Photoshop CS3, CS2, CS, 7, Adobe Illustrator CS3, CS2 and Adobe Dreamweaver CS3, both Windows and Mac versions.
Bittbox has released some free ink/water Illustrator brushes and has done a round up of 16 Incredibly Detailed, Useful (and free) Dingbat Fonts
How to Create Line Brushes in Illustrator demonstrates the process of creating different types of brushes
All about views and the art board in Illustrator explains the various viewing options in Illustrator
“Free Transform” Tool Distorting paths into perspective using Adobe Illustrator’s “Free Transform” tool
This tutorial shows you how crop in Illustrator and work with Crop Area
Obsidian Dawn has produced a tutorial that shows you how to create a seamless texture in Photoshop.
Introduction to Live Paint by Stian Bakkane is a quick introduction and covers the basics of the Live Paint tool in Illustrator.