Learn Ruby the Hard Way is a free online book on the Ruby language for beginner programmers. It’s an adaptation of Zed Shaw’s Learn Python the Hard Way translated into Ruby by Rob Sobers.
Learn C the Hard Way is also in progress, but only the first few exercises are up so far. I expect other versions will follow at learncodethehardway.org. Shaw updated the Python version earlier this year, so it sounds like he’s getting serious about bringing out more versions.
For more resources for learning Ruby, check out our list of Ruby books for beginners.
