I'm including the link to the discussion thread where I tried to point you in the right direction.
http://scn.sap.com/thread/3372834
In case of the BSP Learning Portal, you will need only one iView. You can however install the provided Business Package if you want. There are NW70 and NW73 versions of the Business Package, mainly due to different packaging. In that sense the portal version is the determining factor.
https://service.sap.com/sap/support/notes/1472067
https://service.sap.com/sap/support/notes/1714152
With Admin and Instructor/Tutor the version of the backend (EA-HR) and used Business Functions determine what Business Package you should use.