How to Filter Your Incoming Google+ Stream
After you've signed up for Google+ and created some circles of friends, colleagues, and heroes, you're ready start consuming their content. In Google+, you can choose to take the default route and consume everything in every one of your circles, or consume that of a single circle.
To choose a specific circle, click one of the circle links on the left, and your stream will change to the content from that particular circle.
It's up to you to decide which way you want to consume content. Google+ is likely to add even more filtering options in the future, so you may also have other options at some point. Regardless, using the circles list makes reading your stream of such a diverse group of people much easier.
In the figure, under Wiley Editors, notice the Incoming and Notifications links.
The Incoming link takes you to another stream view that shows updates of all the people that have circled you but that you have not circled back. This approach could be a great way not to follow everyone back while staying up with the updates of the people who have circled you. This is one of the most interesting stream views on Google+ because it introduces you to new people who are circling you.The Incoming link can tell you about the people who have circled you.
The Notifications link is just the list of notifications you have received on Google+. This list includes comments, shares, and new people who have circled you, among other things. If you miss a notification from your sandbar notification, just come here, and you can catch up on everything.The Notifications link connects you with notifications past and present.