This is not a technical page! It's about how the discussion is structured and how you can use it.
The discussion pages are set out as a table:

People use lots of different names for the headings you see here, but ezboard describes the headings as 'categories' and what is listed below them as 'forums'.
We can have as may categories and forums as we like but individual discussion members can't set them up. This can only be done by 'administrators'.
If you click on a 'forum' you get a table showing the 'topics' in it.

Individual members can start a new topic or post messages and replies to those already there. Some topics may be clsoed or locked by moderators and administrators.
If you click on a topic you will get a table showing the replies to that topic.
You can post your own reply here.

As well as members, there are moderators and administrators whose role is to look after the board and the messages on it. According to how they are assigned their roles they can edit and move messages, manage membership (approving new members, opening and closing discussions, even banning those of us who misbehave). Any discussion member can become a moderator or administrator. In fact we will need to assign several people to that role just to be sure that the board is looked after efficiently.
Anyone interested in doing this should post a message in the discussion, email the moderator of a forum or email Brian Hill direct.