I had been working on an interview with Javier Ramirez, author of Aptana RadRails, An IDE for Rails Development. It was a good interview as Javier really knows his Aptana RadRails. It was eye-opening for me because I had not looked at the Aptana RadRails development environment in a long time and it has come a long way since becoming part of Aptana. It is worth checking out for sure.
The book itself is a good read and a good introduction to the IDE itself. If just starting out with RadRails this book would be a good companion around the IDE. My complaint when using RadRails before was exactly how to use it, this book helps. It also helps RadRails has come a long way since then.
The interview is pretty long and can be read on the InfoQ web site.