QuarkXPress 5.0 Training Directly from Quark themselves. UserID and password, ask me for it. Still want more? Here:

Graphics, Drawing & Photo Tutorials

QuarkXPress 4.1

Quark Tips (see also the menu on the left for tips on using other graphics apps)

QuarkXPress Technical Manual Project - learn how to actually make a technical manual using the software. Step-by-step tutorial.

Basics of QuarkXPress v4

Another site with basic Quark training

as an aside, here's a whole lot more other training that you might find of interest.

Adobe Illustrator 10

Adobe InDesign 1.0

CorelDRAW 10

Adobe Pagemaker 6.5

Adobe Photoshop 5.5