Muchas dudas que se tienen vienen respondidas en el manual de Ayuda, abajo del todo del foro:
Viewing The Board Index
When visiting the board, you will be presented with a list of categories and forums in those categories. This page is called the Board Index, and it lists all of the forums.
Forums are split into categories. You can choose to hide any category by pressing the "-" button on the right-hand side above the list of forums, and the "+" button to make them visible again. If hidden, such categories, and the forums inside them, will be collapsed and no longer shown to you when visiting the board index.
When viewing the forums, there are icons shown next to them which indicate the status of a forum, and if it has unread posts or not.
This indicates that there are posts which you have not read contained inside this forum, or one of it's sub forums. This indicates that all of the posts contained in this forum and it's sub forums have been read. Redirect forum, when you enter this forum you will be redirected elsewhere. The Topic List
Within each forum there are a list of topics. Just like forums, each topic has an marker to indicate the type of topic it is: A regular topic with unread posts. This is a topic which you have participated in, with no new replies since you last read it. This indicates that you have previously replied in this topic, and there are new replies since you last read or replied to the topic.