Rails in a Nutshell aims to be the perfect desktop companion for your Rails 3.0 development by providing condensed referenced material and tips.
We decided to release the book through the O'Reilly Open Feedback System so that you can read the manuscript while it is in progress and help create exactly the book you want. Consider it an agile process for book writing. We can incorporate your feedback and correct errors much more quickly before the book hits printers.
We're aiming to have the book ready for the launch of Rails 3.0. I strongly encourage you to check out the current draft and provide any feedback or comments you might have.
You can follow the progress of the book on Twitter via twitter.com/railsnutshell..
The makers of Freckle Time Tracking have created a beautiful and informative guide about getting started with Active Merchant called Jump Start Credit Card Processing. The guide is free to download and jam packed with information and great design. There is even a checklist for getting a merchant account near the end, which will definitely easy the pain of getting started.