On DZone.com there's a recent article posted by Kasia Gogolek that walks you through the deployment of a web application with the Webistrano tool, a web UI for working with Capistrano. This follows the first article where they talk about the Webistrano installation.
Most of the applications I write, are PHP based, so all of my examples will be based on that assumption, but you can re-use the ideas mentioned for software written in any other programming language. The setup [in the example] discusses just the deployment to the test project. Deployment to the production will be similar, and by the end of the article, you should understand what differences it will require.
She walks you through the creation of a new project, an example of the contents of the "base.rb" configuration file and how to create the stages (environments) to deploy to. Next up is the "recipes" themselves - the configuration steps for the deployment process. In their examples they show how to set permissions, update a database, manage asset files and a bit more to get Plesk installed on a server.