OP here, We did/do professional trainings for QML for quite some time, but now that the technology is already around, we decided to publish our Basic QML Training as a video series on Youtube, together with excercises and all. You will find all videos at https://www.youtube.com/watch?v=JxyTkXLbcV4&list=PL6CJYn40gN...

Hope it helps and you reach your goals! :)

The KDAB tutorial video that wuschelhase recommended is great.

There is also the qmlbook: https://qmlbook.github.io/ that provides all the information you want to know about QML.

We (KDE) recently published a small tutorial about the Kirigami (our QML based convergent tooltip): https://develop.kde.org/docs/kirigami/. And generally taking a look at Plasma Mobile applications is a great learning resource.

Awesome! Would you say that QML is mostly interesting for mobile/convergent apps or is it something that you'd use for a normal desktop app as well?

I think it does well on desktop too. I deploy my app to Windows, Raspberry Pi, and Android. My initial testing of new features is all desktop, running on my Ubuntu dev machine, and I find it pretty reasonable.