Ruby Crash Course

From BarCamp DC Wiki

This presentation is an attempt to teach the core of the Ruby language in just 35 minutes. It does not reference any libraries, although there are many excellent ones bundled and available. Rather than exhaustively documenting the language, the focus is on the logic behind Ruby and the facilities it provides. It assumes knowledge of some other imperative, object-oriented language (e.g. Java).

NikolasCo is working on a longer and more thorough version.