Visualizing Matrices Operations...

I don''t know about tutorials, but there is an excellent book that covers all of this, would be well worth the investment if you plan on doing more with graphics. It''s "Computer Graphics: Principles and Practice, 2nd ed" by Foley, van Dam, Feiner and Hughes. Make sure you get the 2nd edition, as it is in C versus the 1st edition being in Pascal.

The openGL red book covers some of this stuff, though if you are doing programable shaders you are probably doing DX, right? At any rate, I have the ogl red book (as well as the blue book) mirrored on my website.

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capn_midnight | Captain Midnight | deviantArt
ACM | SIGGRAPH | Generation5

I own a lot of books, that one included, gonna have a look.
You have any pages/chapter in particular in mind?

Also, I''m doing this under OpenGL, under Cg, with an ATI 9600 XT...

Got a lot of small shaders working and running and doing neat little effects, bu I need to understand when I have to flip vectors between "spaces" (model, view, projection, clip, eye, etc...).

This is where a visual tutorial showing each step of the pipeline, enabling us to mess with the matrix values, etc, would come in handy...

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[Hugo Ferreira][Positronic Dreams][Colibri 3D Engine][Entropy HL2 MOD][My DevDiary]
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This is more about transforms but you might find it of some help: http://www.isner.com/Transform/IsnerTransformManip_04.htm