Ruby Users Guide
This guide covers the following topic: What is ruby, Getting started, Simple examples, Strings, Regular expressions, Arrays, Back to the simple examples, Control structures, Iterators, Object-oriented thinking, Methods, Classes, Inheritance, Redefinition of methods, Access control, Singleton methods, Modules, Procedure objects, Variables, Global variables, Instance variables, Local variables, Class constants, Exception processing: rescue, Exception processing:ensure, Accessors, Object initialization and Nuts and bolts.
Author(s): Mark Slagell
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
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
