Here are some super handy keyboard shortcuts for switching between open document windows when working within the Adobe Creative Suite applications (Illustrator, Photoshop & InDesign). These are Macintosh-only keyboard shortcuts since I do not have access to a Windows machine. Sure to increase your productivity.

• Illustrator: Command (Apple) + ~ (that’s the “tilde” key, to the left of the numeral one, otherwise known as “the little squiggly line thing”)
• InDesign: same as Illustrator
• Photoshop: Control + Tab

The first two are not actually Adobe Creative Suite specific; they work in OS X in just about any application. The reason the Photoshop keyboard shortcuts are different is due to the fact that the Command + tilde is reserved in Photoshop to show all channels, and is used in conjunction with the Command + 1, 2, 3, and 4 keys to highlight specific channels in either RGB or CMYK mode. On CS1, there is no way to edit these in the “Edit Keyboard Shortcuts…” panel (you do know about this, right? It’s at the bottom of the “Edit” menu.).