Welcome to the site. Avatar and I are in a quad relationship. It is pretty fulfilling and of course it take a ton of communication and personalities really have to mesh. I hope you find what you are looking for in the forums and in your poly life!
39 years old, married (almost) 17 years to Avatar, in quad relationship for 2 years with Busbuddha and his wife, 3 kids between us. Have been practicing non-monogamy for 8-ish years.