Getting Real, a book elaborated by the company 37 signals (creators of Basecamp, Ta-da List and others), is already available and free, only online. The PDF version to download still continues costing US$ 19.00.
The book had very good reviews, for what is a recommended reading. Itâ€™s not a practical book but rather theoretically (planning, skills, advices and philosophy) that looks for the simplification of the Web cycle development and the orientation to the final user.
Link: Getting Real Online