Some excerpts you might enjoy:
- Table of Contents and Chapter 1: What is Interaction Design? (2.6mb pdf)
- Chapter 4: Design Research (on the New Riders site)
- Chapter 6: Ideation and Design Principles (on Johnny Holland) New chapter!
Other new chapters include Design Strategy (Chapter 3); Design Research Analysis (Chapter 5); and Prototyping and Development (Chapter 8). Most of the rest of the book has been substantially re-written. All in all, I feel it’s a much better introduction to the field than the first edition. (First edition readers: contact me and I’ll be happy to send you the Design Strategy chapter as a pdf for purchasing the “Beta” book!)