Learn Ruby The Hard Way
by Zed A. Shaw
Publisher: LCodeTHW 2011
The book assumes absolutely no prior programming knowledge and will guide you carefully and slowly through the learning process. When you are done with this book you will have the skill to move on to other books about Ruby and be ready to understand them.
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by Heiko Webers - OWASP
In order to prevent attacks, minimize their impact and remove points of attack, first of all, we have to fully understand the attack methods in order to find the correct countermeasures. That is what this security guide aims at.
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.
Ruby is an interpreted, object-oriented scripting language. This book will show how to install and get started with Ruby in your environment. It demonstrates the main features of the language syntax. The text is designed to be self contained.
by Jeremy McAnally
Covers the Ruby language from the very basics to the advanced topics. Written in a conversational narrative rather than like a dry reference book, Mr. Neighborly's Humble Little Ruby Book is an easy to read, easy to follow guide to all things Ruby.