bbPress.org

I’ve looked around this forums and Google’d it. It is just not making sense to me. I understand there’s a folder that you download, but I installed bbPress via JustHost.com. I do not know how to connect it to a folder or how to actually make these plugins work. Clearly new at this whole deal. When I go to edit my bbPress forum and look at the plugin section there are only three, and I assume they are the three that come “pre-loaded” when you start a new forum.

Am I missing something here?

Thanks.