As inspired by francisstokes's post, I've finished a tutorial that introduced new users to all of QDK's functionalities. It is written in fairly easy to read language, and has plenty of screenshots, examples and helpful hints. The tutorial is broken down into several sections to so more advanced users can skip straight to the more complex features.
The tutorial is available for download at my website:
http://members.westnet.com.au/web/chrisames/Please tell me what you think!