Unless there is a direct need to work on a legacy system, it is perfectly fine to start with the newest version of the Java EE standard.
For starters I’d recommend free tutorials by Marty Hall, especially Configuring & Using Apache Tomcat to get you up and running.
There is also an official Java EE beginners tutorial, The Java EE 7 Tutorial. It is decently written and contains a lot of examples. By the end of it, you should have a pretty good idea where to go next.