Funnels, Tubes, and Spaces

Teresa Torres Continuous Discovery Habits: Discover Products that Create Customer Value and Business Value

Steve Krug Don't Make Me Think, Revisited: A Common Sense Approach to Web Usability (Voices That Matter)

Irene Pereyra Universal Principles of UX: 100 Timeless Strategies to Create Positive Interactions between People and Technology (Rockport Universal)

Ben Hunt Convert!: Designing Web Sites to Increase Traffic and Conversion