Polyamory Society
The Polyamory Society is a great place to find out a lot of the basics of polyamory; how it got started, where it is today/where it’s going, and poly events going on across the country. Also contains a wealth of other polyamory resources!
http://www.polyamorysociety.org/
Meetup
Meetup.com offers polyamory meetups near you. I highly recommend going to a poly meetup and interacting with fellow polyamory couples and singles to learn more and better understand polyamory in general.
Reddit offers a great polyamory section that couples and singles interact with every day. This is a great place to talk with other people to learn more about polyamory and other people handle their business!
http://www.reddit.com/r/polyamory
More Than Two
Morethantwo.com is a good resource for the more in-depth polyamory questions. While many websites are bland and simply offer a blanket overview, this website will surely be able to answer your question.
This show is excellent! I highly recommend because it shows different types of polyamory and the interactions between the various partners. Unfortunately, it is relatively basic and doesn’t cover many of the problematic issues some couples go through when it comes to polyamory. This show is graphic with many scenes of sex during every episode. There are only two seasons and is a good watch for any new poly couple.