Welcome to our forum.
It sounds to me like you have the right idea, and are off on the right foot. Jealousy is fairly common among polyamorous folks as well as among monogamous folks. Sometimes you overcome it, sometimes you weather it, sometimes you discover something that needs fixing in the relationship. I think of jealousy as being a blinking red light. It doesn't mean all is lost, it just means something is in need of attention. Asking oneself questions about where the jealousy might be coming from is usually a good place to start. Often it has to do with some need that needs to be met. We often feel more generous when we feel like our needs are getting met.
If you look around on our site, I'm sure you'll find more information that will be helpful to you. If you keep posting thoughts, questions, what have you, you can get direct feedback and find out what you need to know.
It's good to have you aboard.
Love means never having to say, "Put down that meat cleaver!"