Great tutorial

https://mysmarthomeweb.wordpress.com/

Examples of configs for HAPanel

https://community.openhab.org/t/examples-of-habpanel-solutions/15557/39

Matrix theme

https://community.openhab.org/t/matrix-theme-for-habpanel/31100

Hacking Basic UI

https://community.openhab.org/t/hacking-basicui-my-current-theme-oh2-setup-update-with-repo/45850

Eclipse IoT Marketplace

https://www.openhab.org/docs/configuration/eclipseiotmarket.html

OpenHAB with Wavin Gulvarme 

https://www.lav-det-selv.dk/forum/aft/210932

Things to do with your network-connected Denon/Marantz receiver

http://techblog.vindvejr.dk/?cat=13

Controlling IKEA Trådfri Lights from your Pi

https://learn.pimoroni.com/tutorial/sandyj/controlling-ikea-tradfri-lights-from-your-pi

My smarthome with openHAB2

https://mysmarthomeweb.wordpress.com/

The Homie convention

https://homieiot.github.io/