If you’re not on it, basically all you need to do is create a profile. Once you have your profile set up, find your friends (EMP) and put them in a circle. What is a circle? It’s Google’s way of allowing you to share the right things with the right people. So, yes, you can have more than one circle. Share photos, videos, links, or whatever you like by using the share box on any Google site, or those +1 buttons that are surfacing across the web.
If you’re on Google+ already join the EMP circle. If you’re not on Google+ think about giving it a try.