Previously, I had purchased Programming Ruby.
I guess I can start experimenting with Rails a lot more now as I finally have the two books pictured on the right :-)
By the way, both Ruby on Rails and Ruby Gems, the Ruby package manager, have just been updated. I did this on my Linux box:
sudo gem update --system
sudo rm /usr/lib/ruby/gems/1.8/source_cache
sudo gem install rails
By the way, here is a tip I got from the Agile Web Development with Rails book on how to generate the Ruby on Rails API documentation automatically:
A directory called api will be created into the doc directory. Move it to the desktop and, voilÃƒÂ , you have the complete API documentation.