Thanks Mark ! I found this video very helpful especially I am new UNA coming from the Dolphin world..  
>> I have 2 questions:
1> I'd like to add the { Join } Block (see attached) to my { explore } page, but once I login, the { Join } Block should not appear anymore since I am already logged in.
2> Once I setup my ( explore } page, how do I direct my site to { explore } page to come up first once my users access my site domainDOTcom ?
Thank you !
-AJ