A forum is an online discussion site. It starts with various categories (broad subject areas). Each category contains topics (more specific subject areas), and each topic contains posts (conversations on a topic). Each post starts out as a single message and grows as more individual messages are added by different users.
When you click on a category’s name, it will list all topics in that category. When you click on a topic's name, it will list all posts (messages) in that topic.
To see a list of topics within a category, click on the category’s name.
To read an existing topic, click on the topic’s name.
To add a reply to an existing topic, click on the 'Reply' button, then input your message (post).
To start a new topic, click on the 'New topic' button, then input the topic’s title and your message (post).