You can go to invision free and link to it, it is a fairly easy forum to learn. Right now I have a premium account with bravenet and I have several drupal sites that are forums, blog, chat, all that.
view them on my website. Contact me, I'll help you get it going.
With Bravenet forums you do it the way it is done here. Each forum is opened under a separate account and the links grouped together on a standard html web page. It is perfectly acceptable to put services from one account on a web page created under a different account at Bravenet.
Other forum services will do things differently. Look around at what is on offer and what suits you best.