The Adobe InDesign team has released a free migration guide for those switching from QuarkXPress to InDesign CS4.

The 56-page PDF guide includes the top ten differences between the two desktop publishing packages, most used shortcuts, and a detailed look at the Document Window.
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Other areas include opening QuarkXPress files, importing text and graphics, using native file formats, preflight and output and ways to supercharge your creative workflow.

A list of useful InDesign CS4 resources is also included.

The new guide is part of a comprehensive set of resources available at Adobe.com.