I’ve posted about the subject before but if you’re new to Ruby on Rails and Restful development, here’s a couple of usefull links and tutorials to get you started:

“Introduction to Restful Rails Development in Rails”

“PeepCode ScreenCasts: RESTful Rails”

“How to Create a new Action in REST”

“Caching XML in REST”

“Rails Restful Authentication”

If anyone has more resources on the subject, don’t hesitate to share.