The application help for Dynamics NAV 2016 is very good. You can find it at the MSDN library at https://msdn.microsoft.com/en-us/library/jj672859(v=nav.90).aspx.
Some of the things you will find on this page:
- Find information about enhancements and improvements to Microsoft Dynamics NAV at What’s New: Application Changes for Microsoft Dynamics NAV.
- Benefit from RoleTailored design at Learn About the RoleTailored Design.
- Fill in new master data records quickly by applying templates at How to: Create Cards by Using Data Templates.