Chad Fowler; Pragmatic Bookshelf, 2006, ISBN 0977616606. Shows how experts have already solved many problems, from latest Ajax effects to development time-saving automation tips.
Model View Controller Web framework inspired by Action Pack. This way of development is productive, intuitive, easily testable. Was Castle on Rails. Part of Castle Project.
Dave Thomas, Mike Clark, David Heinemeier Hansson, Leon Breedt, Thomas Fuchs, Andrea Schwarz; Pragmatic Bookshelf, 2006, ISBN 0977616630. Thorough guide, from Agile Programming perspective.