Ruby Basics [closed]

Answer 1

For start with the language:

• Ruby Documentation
• Why's Poignant Guide To Ruby (offline since August 2009)
  • Mirror 1 (Scribd)
  • Mirror 2 (PDF Version)
  • Mirror 3 (HTML Version)
• Programming Ruby
• The Book Of Ruby
• Ruby online interpreter

And if you'll use Rails, these screencasts are excellent:

• Ruby on Rails Screencasts
• Railscasts.com

Answer 2

Here's another that I came across in my endless googling: Ruby Learning

And I must say, that my favorite so far is Why's Poignant Guide To Ruby. Definitely a must read.