Jim Rutherford passes on these links, the 12 tutorials that [he] found most useful
for learning Ruby on Rails.
A point based question and answer website for rails issues. I suppose the title pretty much explained everything...
This 6 chapter 'book' walks through the construction of how to build an Ajax based 'line-item' editor using Ruby on Rails as the backend.
From Rubygarden, instructions for adding Ruby syntax hilighting to Dreamweaver MX.