If you have used the registration sample and successfully registered with the BBM Social Platform, your application should be listed in BBM within the apps section of your user profile. Instead of trying to explain where to see that, have a look at a video I created on the BBM SP here: http://www.youtube.com/watch?v=efDHIbRbeho&feature=youtu.be
That video also demonstrates other BBM SP features like status updates and profile boxes.