In this Blog http://blogs.atlassian.com/2014/09/atlassian-university-free/ , @Sebastian Chevrolet [Atlassian] said in the comments that you don't need an Atlassian ID to access the click-through trainings. Indeed, that was the case.
But since 15 September 2014 it seems that we do need an Atlassian ID to be able to access all Atlassian University click-through trainings? When not logged in, this message appears:
Paid Area To view this walk-through you must log in and be part of a network that has purchased University. Purchase University»
Did something change? Atlassian ID required to access the (free) Atlassian University from now on?