If you've been thinking about picking up Rails, or a web programming framework then I encourage you to take a look at this fantastic book by Patrick Lenz. I recently purchased a hard copy from Amazon and I'm kicking myself that it's now available as a free PDF download. The book has been written for the current release of Rails (1.2). I'd imagine SitePoint is giving the book away because Rails 2.0 is around the corner. If you're a complete newbie to Ruby or Rails, don't worry, the book has a strong orientation towards that audience. None the less, it's certainly worth adding to your collection. If you're unfamiliar with Ruby on Rails, here is a quote from the their front page. This is the e-mail I received from SitePoint. It has the instructions on how to obtain a copy. The PDF is approximately 20MB. You'll need to provide them with your e-mail address, but you can opt not to receive newsletters. More information on Ruby on Rails.