At this point you should have Tomcat up and running and you have compiled Velocity. Velocity is the velocity.jar file in the /bin directory of the Velocity install directory.
To build the examples go to the build directory and type:
ant examplesAnt searches for the build.xml file and builds the Velocity examples.
If you look at the /examples directory you see the forumdemo example. Note: the README file can be outdated (it didn't use ANT yet in our case..).
Now to get the forumexample working just follow these steps:
If you experience problems, make sure you've done everything as described above. Maybe things are updated, and new settings are needed, so read the documentation of the applications carefully!
If a template file can't be found make sure you started Tomcat in the right directory!
There should be a Velocity log file in the forumdemo directory: forumdemo_velocity.log, if it's not there, you probably started Tomcat in the wrong directory!