It might help if you could say more about your background and your motives.
Is this just personal exploration, either to understand your friends or to consider your own options? Is it a research project for a course? Or does it serve some other purpose?
People - and not just people on this forum - might be skittish about becoming research subjects.
In any case, you can learn some of what you need by reading a lot, on this forum and elsewhere. Doing that might also help you to ask better questions, questions people might be more willing to answer.
When I first found out about polyamory, I discovered this site - http://www.xeromag.com/fvpoly.html
- which began to answer many of my own (personal, not research) questions.
That might be a good starting point.