We have seen everything here. Nothing really phases anyone that has been here awhile. No worries about being a newbie, this place was built on newbies.
I would suggest though that you have a look around and read lots. Try threads found in the search engine with tags such as "lifestyle" "secondaries" "unicorns" "veto" and mostly "lessons" and "foundations"
The joy is that you can decide how to create whatever works for you, but be warned, you will never have the same relationship again in my experience. Mono culture teaches us to be glued to each others side... poly is the opposite of that... its not so much a lifestyle as a way of life. I would suggest you be sure that you are ready for that by educating yourselves together.... good luck!