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