When I started with openHAB 2 I purchased the book
Spiller, Marianne, Smart Home mit openHAB 2
where I got a lot of inspirations and information how to setup openHAB.
openHAB 3 provides a lot more functionality through its UI and when the normal upgrade through openHABian did not work, I decided to do a fresh install. It turned out to be an excellent decision.
Now, I would like to learn more about the new capabilities, especially the widgets.
Is there any documentation beyond what could be found on the openHAB Web-Site, that I could use to learn more about?
I hope I expressed it well enough and I thank for any response.