I feel like a total noob posting here. I know CSS, HTML, and XML pretty well but have always avoided JS. I know very little javascript and recently started a Lynda.com course
Update as of 2015, Google Script removed the fileId for reasons unknown. The previous method of appending "/copy" to the URL of the Google doc has been re-enabled. Ex) https://docs.google.com/document/d/1GTGuLqahAKS3ptjrfLSYCjKz4FBecv4dITPuKfdnrmY/copy