Agile/XP Book Freely Available

Kent Tong writes "In 2002, we, the Macau Productivity and Technology Center (CPTTM), started to hold courses on XP and OO design to teach the skills in agile development. At the beginning, we hired a well known software training and consulting company in US to teach. While the instructor was very professional and instructive and the feedbacks from the students were very good, the students didn't acquire the skills taught." After revising the content of the course and adding real-world examples, the company says the materials are now more useful, and have put them online for free download in the form of a book, Essential Skills for Agile Development.