I grabbed this list off of a slashdot article.
- Ruby Home
- Ruby Forum (new! primarily for beginners)
- Ruby Online Docs
- Ruby Project Archives, also here
- Ruby Package Manager (easy to install ruby apps)
- Ruby IDE (free!)
- Ruby One-Click Installer for Windows
- Ruby IRC channel: #ruby-lang at irc.openprojects.net
- Ruby Newsgroup
- Ruby Central
Add any links to Ruby resources you might have to the comments!