开始使用Ruby on Rails 3应用程序中的web服务

So I'm getting started learning Rails. Now that Rails 3 is out, I want to stick to learning the Rails 3 way of doing things. One of the things I want to learn how to do is how to consume web services / work with third party REST APIs / create "mashup" applications. I've only done minimal work like this with PHP and pre-built libraries.So I'm getting started learning Rails. Now that