Listmania!
GUI usability and interactivity
The Design of Everyday ThingsThe Design of Everyday Things by Don Norman
Buy new: £6.99 / Used from: £5.54
An all time classic from a giant in usability.
Don't Make Me Think!: A Common Sense Approach to Web UsabilityDon't Make Me Think!: A Common Sense Approach to Web Usability by Steve Krug
Buy new: £12.46 / Used from: £12.30
A must read for beginners & intermediates in UI design.
Prioritizing Web UsabilityPrioritizing Web Usability by Jakob Nielsen
Buy new: £17.99 / Used from: £15.30
Classic from the industry guru.
The Principles of Beautiful Web DesignThe Principles of Beautiful Web Design by Jason Beaird
Buy new: £18.14 / Used from: £16.44
Packed with visual examples, an excellent introduction
Information Dashboard DesignInformation Dashboard Design by Stephen Few
More accessible than Tufte on the visual display of data and dashboards.
About Face 3: The Essentials of Interaction DesignAbout Face 3: The Essentials of Interaction Design by Alan Cooper
Buy new: £17.79 / Used from: £16.99
Heavy weight and thorough.
The Design of Sites: Patterns for Creating Winning WebsitesThe Design of Sites: Patterns for Creating Winning Websites by Douglas K. van Duyne
Buy new: £21.49 / Used from: £15.99
Great design team reference book for common practices.
Designing the Obvious: A Commonsense Approach to Web Application DesignDesigning the Obvious: A Commonsense Approach to Web Application Design by Robert Hoekman Jr.
Buy new: £14.49 / Used from: £16.58
Plain english and full of real world walk throughs.
Designing the Moment: Web Interface Design Concepts in Action (Voices That Matter)Designing the Moment: Web Interface Design Concepts in Action (Voices That Matter) by Robert Hoekman Jr.
Buy new: £14.49 / Used from: £16.49
Stories from the real world of design.