Google+ is still not open for invitations but the web is going crazy over it. The service is still in its infancy and everyone who has an early access to it are still learning it. We are sharing here a Google+ cheat sheet or a quick reference info graphic by one of Google+ user Simon which summaries some basic commands, hotkeys and some other tips for Google+.
If you got any additional tip, you can help him add more to it by sending him a message on his Google+ page.
Via: Simon Laustsen