Service-Oriented Design and Implement with Rails3 by Wen-Tien Chang. Distributed Ruby and Rails by Wen-Tien Chang. Designing Ruby APIs by Wen-Tien Chang. Rails Best Practices by Wen-Tien Chang. Debugging Ruby by Aman Gupta. Rails 3 Beautiful Code by GreggPollack. JSON and the APInauts by Wynn Netherland.