Google+ is fairly straightforward. It's Facebook for sensible people imo.
To people who a new to G+ have a look around and join some additional communities either ones that relate to your photography or that relate to your interests and life. Make sure that you start following people and you will be surprised about the numbers of followers and views you get.
To those who are joining the DCRP Group (unofficial) if I muck things up and don't add you it's not personal so I will try to correct any errors I make. I'm new to this group admin thing.