isharan

there's also the standard Agile Web Development with Rails (3rd Edition)

I have nothing but good things to about Foundation Rails 2 by Eldon Alameda.

another book that Eldon Alameda wrote called "Practical Rails Projects" which does exactly that -- guides you through 6 or 7 Rails projects to teach you all about Rails.

David Black's Well-Grounded Rubyist covers a lot of Ruby.