Learning resources for Ruby, Rails, etc.

Here's a list of learning resources for getting started with Ruby on Rails (feel free to add to the list):

1. Learn Ruby the Hard Way - anyone new to programming should start with this
2. The Rails Tutorial Book - Must read. Great tutorial for building a modern Rails app.
3. The Ruby Programming Language - for experienced programmers, this is the golden standard for really learning Ruby
4. Ruby On Rails Guides - this is the main documentation on Rails, and should be your first stop when you want to learn an aspect of Rails.