Amazon has books now. Rails Up and Running, with Curt Hibbs, is a quick start rails book. It uses migrations and ajax. It’s selling ok, until the Agile 1.1 book comes along and crushes it. Thanks to all of the reviewers who make this possible, and thanks to Curt for fantastic contributions.
The url is [Rails Up and Running](http://www.amazon.com/gp/product/0596101325/sr=1-1/qid=1156803904/ref=sr_1_1/103-4532753-0019041?ie=UTF8&s=books).