Twitter lists can be a very useful way to control the stream of information, or tweets, that you receive on your Twitter feed, particularly if you follow a wide variety of people, groups, or organizations.  You can organize Twitter users into lists so you can more easily monitor different networks of friends, organizations, and interests.  Setting up a list allows you to view only the stream of Tweets from people included in that list.  For example, you could create a list called "News" and that would allow you to quickly review any Tweets from news organizations you might follow without having to scroll through your entire feed.  You don't even need to follow a person or organization to add them to a list.

Lists are easy to create, and it is even easier to add users.

Step 1:  Click on the "me" icon on the top of your Twitter home page.

Step 2: Select "Lists" in the box in the upper left hand corner.

Step 3:  Select "Create list."

Step 4:  A new window will open.  You can enter the name of your list, a description (optional), and indicate whether the list is public (anyone on Twitter can follow the list) or private (only you can access the list).

Step 5:  To add a Twitter user to a list, select a user, then select the downward arrow on the icon on the right.  Select "add or remove from lists" from the pull-down menu.

Step 6:  You can then add a person to a list by selecting the empty box next to the desired list.  A checkmark will appear in the box.  Then, close the window to save.