I read this book for the first time in early 2000s. Then, it was an eye-opening read. I was transitioning from doing big up-front design to a more incremental style of software development, and seeing in details how an expert in XP does it gave me a lot of insights. It shaped the way I approached software development in a very profound way.
This book is dated in terms of the technologies Ron uses (early version of C#), but not in the substance of the lessons he gives to the software developers about how to approach development in incremental, evolutionary style.
Perhaps nowadays it could be series of YouTube screencasts, not a paper-form book. Still, it was enjoyable to revisit it.
Beginner level book to get started on C# + XP . Might be a too dated now technology wise, however my take away from the book was the author's method of incrementally adding functionality guided by tests