first you have the help section
then you have all this examples (although they talk about previous version , the designer hasn't changed so most of this is relevant to the work with sense)
we are also looking for some good guides, solutions or demos of Qlik Sense 3 + NPrinting 17.
I have to say that working with Designer is quite hard and developing reports is much more complicated than preparing apps in Qlik Sense itself. Working with Images is impossible due to its unexpected behavior.
If anybody can share some good practices or guides with QS3+NP17 it would be very helpful.