What did you use to teach yourself Ruby?

Why's (Poignant) Guide to Ruby: http://poignantguide.net/

This is good for your first steps. Then check out The Ruby Way to dig in deeper:

http://www.amazon.com/Ruby-Way-Second-Addison-Wesley-Profess...

With great difficulty, to be honest. A lot of the modules I looked at did not have great documentation. Even the docs for built-in/standard libraries was not very accessible to me, as a newcomer.

I think there's a bit of an over-reliance on in-code documentation. It's not a substitute for good overviews, tutorials, and examples.

A good idea to implement.

This was pretty invaluable for me early on, http://tryruby.hobix.com/

Also from Why_.

It's a bit of a shame that all his work is so spread out, I think; though I suppose http://code.whytheluckystiff.net/ helps.

Beginning Ruby From Novice To Professional by Peter Cooper