This post is for personal reference, I keep losing track of the url to this great resource. Ruby on Rails guides at http://guides.rails.info/ I think this site launched when rails 2.1 came out, it is still a work in progress but is an extremely valuable resource covering everything from ‘getting started’, active record associations, security, debugging, the new 2.2 Rails Internationalization API and more.

Ruby on Rails guides at http://guides.rails.info/