The Ruby Guidebook
If you were visiting some new, exotic place, you'd want to read a good guidebook before leaving, just to make sure you didn't miss the interesting bits when you got there. Think of this tutorial as your conference guidebook to Ruby.
Well spend the time looking at Ruby, the language that underlies Rails. Well take it from the ground up, showing you both the syntax and semantics and (we think more importantly) the idioms and the traps. Youll come away knowing about blocks, meta-programming, open classes, and all the other things that are common in Rails programming.
This tutorial is given by Dave Thomas and Mike Clark, who wrote the books on Ruby and Rails.