A few weeks ago, a friend of mine told me he wanted to learn Rails. He asked me to prepare a private course about Rails and to teach him the basics of the framework.
After a brief discussion, we ultimately agreed that he couldn't effectively use Rails without being a Rubyist. For this reason, I offered him to start with a Ruby concentrate, carefully prepared keeping Rails in mind.
The final presentation is called Ruby 4 Rails and is now available on GitHub. It is based on ShowOff, a Markdown-to-HTML presentation tool created by Scott Chacon. Make sure to read the README to learn how it works. The initial part of the README is largely inspired by John's post about Ruote.