Here you see 5 forums available. These 5 are essentially the foundations of the EF structure. You'll see the same categories repeated throughout the EF.
The top 4 are locked to posting, but open to viewing of all content contained in them. Keep in mind this "content" is primarily in the form of links to the real content.
The last one, Open Forum Discussion, is unlocked or open to posting. It currently has a couple of active discussion threads. Can you see the discussion threads?
It's possible also that you may be viewing a discussion forum that has no threads started yet. Is that part of the problem? You can start a new thread in any of the Open Forum Discussion areas, just click on the "New Thread" box.