Ruby and Software Development Lecture Notes
Covered topics are: Data Abstraction ,Understanding Inheritance, Introductory Ruby, Natural number ADT in Ruby, Background on design patterns, Inverted index program in Ruby, Simple expression recognizer in Ruby, Using Procs and lambdas, Classes and Objects, Domain Modeling.
Author(s): NA
NA Pages 
Ruby Programming by Wikibooks.org
This book is currently broken down into several sections and is intended to be read sequentially. Topics covered includes: Notation conventions, Basic Ruby, Ruby Semantic reference, Built in Classes, Standard Library.
Author(s): Wikibooks.org
NA Pages
I Love Ruby Get started with the greatest programming language made for humans
Ruby is an easy to learn programming language. This book describes the fundamental concepts and techniques in greater depth than traditional introductions.
Author(s): Karthikeyan A K
NA Pages
