Here is a list of important websites on the topic Ruby on Rails:
- http://guides.rubyonrails.org
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A couple of very good official guides.
- http://rubyonrails.org/
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The project page of Ruby on Rails offers many links for further documentation. Please note: some parts of the documentation are now obsolete. Please check if what you are reading is related specifically to Rails 3.2 or to older Rails versions.
- http://railscasts.com/
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Ryan Bates used to publish a new screencast every Monday on a topic associated with Rails. Unfortunately he hasn’t published screencasts for some time now but the page still has valuable old ones