[alen12345]

Circles: You use Circles to organize the people you follow (as well as who follows you) on Google+. And you can use Circles to organize your stream. Just click a Circle in the left column to determine which circle of friends sees your posts.

Real-time stream: In Google+, the stream flows as new updates are posted. New updates automatically show up at the top of your stream after you log in, and new comments appear automatically as people comment on the posts.

You'll quickly realize that you spend much less time refreshing the page and much more time immersed in the info coming across your stream.

Use Circles to manage your stream: You can limit incoming info by clicking specific Circles on the left of the screen. You can open the floodgates to see updates from people that have you in a Circle but that you don't have in one of yours by clicking the Incoming button.