This appendix provides links to useful Ruby resources that are available online, from web sites to chat rooms and mailing lists.
As the Internet is ever changing, some resources that were available at the time of writing might no longer be available to you. When you find that to be the case, it's worth using a search engine to search for the keywords involved, as the site you're looking for might have simply changed URLs.
The resources covered in this section are general references to Ruby and Ruby on Rails. For specific tutorials and guides to doing certain things, you need to refer instead to the "Tutorials and Guides" section later on in this appendix.
Official Ruby homepage (