I'm not sure I know exactly what you mean by web design. So lets start there.

a. The look: the graphic design of the page.

b. The interaction: Usability and UX

c. Designing and coding with good software design principles.

d. Some thing else?

I can point you to some good books for b. or c., however a. is the holy grail. I have never found a good book on web design from a graphic design perspective. That said Ill share with you what I would consider the closest I have found.

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a. (Web site Graphic Design)

* The non Designer's design book - http://www.amazon.com/Non-Designers-Design-Book-Robin-Willia...

* Visual Language for Designers - http://www.amazon.com/Visual-Language-Designers-Principles-U...

* Tuft's Envisioning Information - http://www.amazon.com/Envisioning-Information-Edward-R-Tufte...

* I have found some good online articles http://delicious.com/csmeder/ux

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b. (Usability and UX)

* Web Form Design: Filling in the Blanks - http://www.lukew.com/resources/web_form_design.asp

* The Design of Sites: Patterns for Creating Winning Web Sites - http://www.amazon.com/Design-Sites-Patterns-Creating-Winning...

* And again Tuft's Envisioning Information - http://www.amazon.com/Envisioning-Information-Edward-R-Tufte...

* Information Design Workbook http://www.amazon.com/Information-Design-Workbook-approaches...

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c. (software design and coding)

* Bulletproof Web Design - http://www.amazon.com/Bulletproof-Web-Design-flexibility-pro...

* Handcrafted CSS - http://www.amazon.com/Handcrafted-CSS-More-Bulletproof-Desig...

* jQuery in Action - http://www.amazon.com/jQuery-Action-Second-Bear-Bibeault/dp/...