http://shortcut.to/leon - A tutorial by Leon Widdershoven. It takes the user through the process of creating some simple games. It is still a work in progress.
Demos:
There are also a few examples included with the source--or in
the "demo" package. Look in the demo/ directory.
If you are experienced at writing documentation or would just like
to help see the Help Wanted
section for more information on contributing to the project.