Here I found a gr8 post by Gerald Bauer (RailsAdvance), Thanks for gr8 post.

Welcome to the 10-Minute Quick Start Guide for Facebooker showing you how to create a Facebook application from scratch using Ruby on Rails in 7 easy steps:

1. Create a Rails application
2. Install the Facebooker Rails plugin
3. Log on to Facebook and set up a new application
4. Add your API key and secret to the facebooker.yml configuration file
5. Create Rails controller (and view skeletons)
6. Configure default route and remove public/index.html page
7. Use Facebooker to get your name, profile pic and status

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