Ruby documentation project: links and downloads of programming information, on many aspects of Ruby.

Original Japanese version by matz. First English translation by GOTO Kentaro and Julian Fondren. Further translation and editing by Mark Slagell.

By Daniel Carrera. Introduces programming, Ruby, assumes familiarity with computers in Unix X Terminal environment, but not Ruby; simple descriptions, many screenshots. Unfinished, but well done and useful for what is done.

Questions and official answers on Ruby.

IBM developerWorks group space: articles, podcasts, RSS feeds, courses.

Documentation and examples, as digital books, for RubyCocoa, a bridge between Ruby and Objective-C, a way to make desktop programs with Ruby.

By David Thomas and Andrew Hunt. Offers a beginner guide to start with the language.

By Hal Fulton.

Provides coding tips for the language's users.

Set of thorough study notes, and class, for those new to Ruby and meeding a solid introduction to its concepts and constructs. By Satish Talim.