When you buy a MapR Academy Pro. subscribtion, you get access to the courses for 6 months only.
It would be great to remove this limitation so it becomes accessible forever, with the possibility to re-pass the exercises, and to get the updates of the new features.
This way, you will get more people involved in learning the product (and selling it indirectly), and they will be satisfied of the continuing training that they will enjoy.. It's a win-win deal.