I am running Ruby on Rails 3 and I would like to create an application APP1 that acts as a Web Service. Then create another RoR application APP2 that can communicate (send/get information) with APP1 using the OAuth protocol.
What I have to do to start (I am not expert about programming in those topics but I read a lot and I know how they conceptually\theoretically works)? Is it good to think to implement my custom code or maybe it is better to use plugin or gem? Why?
If it is possible, can you write a TODO list and steps to accomplish what I aim?
And, more important, can you suggest me some useful (awesome) resources (like books, blog posts, ...) about creating RoR Web Services?