Something that would be hugely useful to me (a code monkey who knows good design when he sees it but is incapable of producing anything that looks nice himself) is a chapter that covers a few essential skills in Photoshop or Fireworks.

Basic nuts and bolts stuff like:

- how to use a few simple effects and filters to blend images in to backgrounds or do a cutout or colorize an image to match the sites colour palette

- useful tips or tricks for designing the chrome of the site (e.g. how to make a menu bar with rounded edges and a gradient effect, how to make nice looking buttons, how to make a textured background, how to blend edges etc.

- how to use transparency and/or layers effectively

Why would this be useful?

Like lots of coders (I assume!), my approach to design is to surf around the web for hours and bookmark sites that I think look good or have ideas I can use. I then spend ages kack-handedly trying to bash bits of screen shots together and introduce new elements (buttons, stock photography etc.) until I have ended up with a design that looks vaguely appealing. If I had a quick cheat-sheet for Photoshop or Fireworks that aided this process it would be a god send!