QT creator tutorial - creating a notepad app

Apparently QT is pronounced "cute". 

How to get started with Qt Creator | C++ GUI | Libraries | Qt Designer | Cross platform - YouTube

A tutorial to create a notepad app, which demos many of the work-a-day aspects of QT creator,

https://www.youtube.com/watch?v=I96uPDifZ1w

C++ Qt Programming - YouTube playlist.

But the best may be the included examples inside QT creator itself.