If it is of any consolation to you, I am also new to OpenHAB and find it frustratingly difficult to use. And I do have quite a bit of technical experience, and so thought it would be the challenge that its proven to be. Even for basics. I´ve been giving it a try and get something nice to use for home in a ´production´ environment, but in months have not gotten far at all.
I disagree with the replies you´ve received from rossko and JGKK, alleging that you have not provided enough information. I believe you provided a very simple question, which I expected would have received a very simple answer.
“How to connect paradox IP150 and get some functionality” should have received a very simple, 1, 2, 3 steps answer, with some notes and pitfalls. That’s it. Right?
This does not seem possible at the OpenHAB community forum.