I am using the Raspberry Pi B+ to build something of a home automation system. It has EnOcean Wireless Sensors, some arduinos and MQTT and a CC3200. I am also going to add a Rover based on the RPi soon. Then there is the RPiSOC that is also involved.
Details
Here is my LONG and painful video of the final system Description and Demo
And Some more... Feat. The Raspberry Pi Telepresence Robot!
The first step is to setup the Raspberry Pi with Raspbian OS. I recommend googleing for the latest setup guide because these instructions vary slightly with time.
Additionally, we need to setup OpenHAB. For that, you should take a look at my detailed post at The Embedded Code
At this point you should have a working Raspberry Pi which can be accessed over the network as well as the latest version of OpenHAB which is ready to start up.
Just voted for your project in the "Best Documented" category. :)