books.google.ca - The Ruby Programming Language is the authoritative guide to Ruby and provides comprehensive coverage of versions 1.8 and 1.9 of the language. It was written (and illustrated!) by an all-star team: David Flanagan, bestselling author of programming language "bibles" (including JavaScript: The Definitive...http://books.google.ca/books/about/The_Ruby_Programming_Language.html?id=jcUbTcr5XWwC&utm_source=gb-gplus-shareThe Ruby Programming Language
