Welcome. Yes poly is very large in topic, but as long as you know what you want and what you don't, it's not too bad.
Glad to hear that you are making it work for you - there are always bumps in the road that need to be negotiated - I don't think poly is different from a monogamous relationship in that respect - some of the issues can be a little different, though.
Please feel free to talk about your story - it's amazing how other folks appreciate hearing the regular stuff about a relationship that works. So many come here to post about relationships with massive issues - sometimes it's valuable to know that it just works.