Congratulations! If you have completed all of the modules, you should now be able to create your own Java application in the workbench. You should understand views and perspectives, and how to take advantage of the tools embedded in the workbench to assist your Java development effort.
If you would like to do the exercises that you saw, you must have org.eclipse.jdt.ui.examples.projects_3.0.0 subdirectory in your installdir\eclipse\plugins directory (where installdir is the directory where Rational Software Development Platform is installed). To install the examples, close the workbench now and rerun the Rational Software Development Platform installation program, selecting only Examples for Eclipse plug-in development. After the incremental installation, restart the workbench and confirm that you want to apply pending updates.