Logitech Harmony Hub Setup HELP

Hi all I have recently got a raspberry pi 3 & Logitech Harmony Hub and am trying to setup home automation I have got openhab running how do I make it communicate with harmony hubI have already got Harmony hub binding addons installed, I have been reading other articles ect but I don’t understand it I am totally lost there is a file called cfg has I have seen in a article and you enter something in there which I don’t know what to enter to get harmony hub working then I would like to get it working with Apple HomeKit Bridge so I can use my iPhone to send command through Siri, I am new to all this never done any coding or anything before would be very Grateful if somebody can tell me simple instructions to what goes where to get this up and running.