In this lesson, you learn how to add and manage Google+ circles.
One of the first things to do when you sign up for Google+ is to add people you know—and those whose posts you find interesting—to circles.
Plain English: Google+ Circles
Circles enable you to organize your Google+ network by placing people into distinct groups. When you post content on Google+, you can specify exactly which circles can view those posts. You can also specify privacy settings by circle. This gives you complete control over who sees what content.
By default, Google+ offers four ready-made circles for your profile (the default circles for pages are different), but you can also create new circles ...