The Little Book of Ruby
by Huw Collingbourne
Publisher: Dark Neon Ltd. 2008
Number of pages: 87
Ruby is a cross-platform interpreted language which has many features in common with other 'scripting' languages such as Perl and Python. However, its version of object orientation is more thorough than those languages and, in many respects, it has more in common with the great-granddaddy of 'pure' OOP languages, Smalltalk. This book is a step-by-step tutorial to programming in Ruby and you can follow it chapter by chapter, reading the text and running the sample programs.
Download or read it online for free here:
This book is a great collection of ideas, tricks, and skills that could be useful for Hackers. It's a unique extraction reference, summarizes a lot of research and experience. Rubyfu is a book to use not only to read, it's where ruby goes evil.
by Huw Collingbourne - No Starch Press
A comprehensive tutorial to the Ruby language. Each chapter is accompanied by ready-to-run source code for all the examples. There is also an Introduction which explains how to use the source code in Ruby In Steel or any other IDE of your choice.
by why the lucky stiff
This is just a small illustrated online-only Ruby book. It won't crush you. It's light as a feather (because I haven't finished it yet--hehe). And there's a reason this book will stay light: because Ruby is simple to learn.
by Matt Aimonetti - O'Reilly Media
MacRuby is Apple's implementation of the Ruby programming language which uses Objective-C runtime. This book is an introduction to MacRuby. Topics covered: Introduction, The Cocoa Environment, Foundation, Application Kit, Core Data, Xcode.