Actually, the examples are located http://localhost:8080/jsp-examples/
instead of http://localhost/jsp-examples/
There is a link to those examples on the front page of your default tomcat index http://localhost:8080/
So the how-to should be updated with this error fix. Not sure if it is because I used apache-tomcat-5.5.17.tar.gz versus apache-tomcat-5.5.16.tar.gz or not...but that's the fix.