Most of you should have already at least heard of Google+, Google's new social network and Facebook's new rival! Here's a handy quick reference with common things you should know about Google+, like how to prevent a post from being shared and hotkeys for more quickly navigating conversation streams.
This reference was created by Google+ user Simon Laustsen is pretty neat. It's already been translated into a dozen languages. As the cheatsheet says, you can help add more tips and tricks by sending Simon a message at his G+ page.