on 19 May 2011
A really pragmatic book. Step by step instructions for getting you started with some of the most USEFUL gems out there including prawn, MailForm, capybara, handlers, rdiscount, Mongo Mapper, redis, sinatra and even device for cross-application (see facebook etc.) authentication. This is not a starter book but if you need to start using rails 3 to its full extend it's a must read.