This tutorial comes with the Source Code release of Jetspeed 1.6 or greater.
If you check out Jetspeed from the CVS head, the tutorial is included under the /tutorial directory.
You can get Jetspeed from the Apache CVS, or from the Apache website.
To checkout from the CVS head, follow the instructions here:
CVS Head
and then build the distribution target (maven dist:install).
To download the source code to an official release from the Apache website, go here:
Download 1.6 Source Release
Unzip it and build the distribution target (maven dist:install).