* You can click on profile pictures to rotate through them.
* In the stream, you can click 'j' to navigate down to the next item or 'k' to navigate up. I think it's the same keys that Gmail uses
* If you're sharing a post with a small circle of people, you can prevent resharing. Click the arrow at the top-right of the post and choose "Disable reshare."
*One more: if you're looking for more fun things in your stream, the "Incoming" stream is stuff from people who are sharing with you, but who you haven't added to a circle.
There are a lot of other tips and tricks for Google plus which you should learn. i am still digging out more features, settings and shortcuts for Google plus.
You can follow us on Twitter or join our Facebook fanpage to keep yourself updated on all the latest from Microsoft, Google and Apple.