Everyone is allowed access to read the forum but only registered users to the website may post. As a registered user, you'll notice the buttons at the top are more plentiful. Here's an overview about them.

Inbox - To prevent spamming of user's emails, an interractive mailbox is set for each member display name. You may utilize this method to email back and forth within the website without revealing any real information about yourself.
Memberlist - A review of the membership online.
My Settings - Set your profile info and user settings.
My Posts - Review all the things you've ever typed on the forum.
Search - Search what other's have said either by author, title, or something they said within a particular post. Simple keyword type searches can be done here.
Forum Home - Gets you back to the forum from within the emails, searches, settings, etc.
Aggregated Forum - Shows you only the most recent posts without you having to sift through each group or category. *Note * Clicking on "All Public Forums" will do the same thing.
You may tag a forum at the bottom to email you anytime there's new responses, or you may tag an entire group.
The Inbox will show up a different color when you have mail in your inbox. Check out the features of the forum. We think you'll like them.