Ruby programmers will learn how to interface with legacy systems, develop web services, and move into the cloud. 250 pages.

This book is about how to succeed in business on the web. Put aside your old ways and look at the new. The authors founded 37Signals, and Hansson is the creator of Ruby on Rails. 250 pages.

A concise introduction to Rails, an overview of commands and configurations, and a guide to the parts of Rails you’ll be using every day. Read the book-in-progress online here. Sorry, it’s not yet at OPL.

A cookbook of 400 topics, with lots of example code. 800 pages.

A chatty, very approachable book. 300 pages.

Enterprise recipes with Ruby and Rails

You will have noticed that I like the Pragmatic series. From the contents: Implement enterprise-wide security — Process e-commerce payments — Get the most out of databases — Tame file and data formats — Process XML documents the Ruby way — Perform basic netwrkign tasks with ease — Use and build web services — Talk to message brokers — Speak foreign languages — Maintain and administer your applications — Test the easy way — Get documentation nearly for free.

This book is useful when you have mastered the basics of Ruby and you want to write some programs. It will help you avoid reinventing the wheel.  Recommended by Matz, 850 pages.

Agile web development with Rails

This book is not ‘recent’ but it is the best Rails book in the library. It is very readable and practical, with many examples. 500 pages.

300 pages.

An introductory book. Well written, 350 pages.