Tagaholic - Demystifying Irb's Commands
http://tagaholic.me/2009/05/11/demystifying-irb-commands.html

Irb is one of the most commonly used standard ruby libraries, yet most don’t seem to know much about it. I’ve lost count of the number of blog posts that explain some irb “tricks” or “secret” config options. This is the first in a series that aims to make irb less magical and more accessible.

IRB articles

Hirb::View.formatter_config

Irb is a great place for interacting with Ruby. Unfortunately, even with the colorful help of wirble, it's not so great for visualizing the output of those interactions. Hirb aims to change that.

View mini framework for irb.

Only requires that gdb be available on the box. No requiring libraries or listening on sockets to get the console. Rad.

Whoah, hot-swapping IRB prompt for running Ruby process.

A backup of whys poignant guide to Ruby. Try Ruby online

Ruby tutorials