Ruby on Rails Tutorial
This book is the only Rails book that does test-driven development the entire time, an approach highly recommended by the experts but which has never been so clearly demonstrated before. Finally, by including Git, GitHub, and Heroku in the demo examples, the author really gives you a feel for what it’s like to do a real-world project. The tutorial’s code examples are not in isolation.
Author(s): Michael Hartl
NA Pages 
This page covers the following topics related to Ruby : The Fundamentals, Installation, Tweet Fetching, Style, Conventions, and Debugging, Numbers, Strings, Variables, Methods, RubyGems, If and Else, Loops, Collections, Enumerables, File input/output, Reviewing Tweet Fetching, Supplementals, Design and Theory, The Projects.
Author(s): ruby.bastardsbook.com
NA Pages
Ruby is an object-oriented scripting language developed by Yukihiro Matsumoto. Topics covered includes: Installing Ruby, Ruby editors, Notation conventions, Interactive Ruby, Data types, Writing methods, Classes and objects, Exceptions, Syntax - Lexicology, Variables and Constants, Control Structures, Classes, Built-In Functions, Predefined Variables, Predefined Classes, Objects , Array, Class, Comparable, Encoding, Enumerable.
Author(s): Wikipedia .org
NA Pages
