You've finally got your CB and Joomla site in place and now wondering what's left to do.
First you should look around to make sure things are as you want them, but likely will not be the case. Some customization is going to be required, but don't get discouraged!
Begin by going to your administrative backend at www.yoursite.com/administrator. From here you'll login using your admin account given to you upon installation of your site.
Now you need change configuration for each component provided initially to you such as Kunena forum component. You may not want the pre-existing boards or want to rename them entirely.