I know you're like me, Halx--not a dead-tree kinda guy. But I've got to say, Agile Web Development with Rails is really the place to start. There's a tutorial that walks you through setting up a simple ecommerce site, then a very thorough walkthrough of every piece of rails functionality. "Agile" is to Rails as the Camel Book is to Perl.
It's here:
http://www.amazon.com/Agile-Web-Deve...0816149&sr=8-1
As for learning Ruby itself, there are some good online intros (see
http://www.poignantguide.com for the most amusing of them) You'll likely pick it up from the examples in "Agile". Ruby's funny because it almost looks more like configuration than code. The syntax is really simple. The hardest thing about it for me was remembering not to end lines with semicolons.