Microsoft Dynamics NAV 2016 is about two month and half here. Currently, you can find a lot of instructions on MSDN and very interesting How Do I videos.

But, you can also find official video courses on DLP and Microsoft IT Academy. Microsoft already published these seven following courses:

• Introduction to Microsoft Dynamics NAV 2016
• Finance Essentials in Microsoft Dynamics NAV 2016
• Finance Advanced in Microsoft Dynamics NAV 2016
• Application Setup in Microsoft Dynamics NAV 2016
• Installation and Configuration in Microsoft Dynamics NAV 2016
• Development Environment Introduction in Microsoft Dynamics NAV 2016
• Data and Code Upgrade in Microsoft Dynamics NAV 2016

I really recommend to see these courses. And you can expect some new courses soon, as well.

Also, you can expect more exams about NAV made by Association of Dynamics Professionals.