Today twitter has launched a new feature .
New! Lists. A great way to organize the people you follow and discover new and interesting accounts. (BETA)
Lists are timelines you build yourself, consisting of friends, family, co-workers, sports teams, you name it. You’re part of a small group receiving this feature, so don’t tweet about it yet!
Here are some of the screen shots.

Creating lists and add followers to the list. It is simple as this .
Check the following screen shots.
1. Click on Create a new list and a popup will ask you to enter the name of the list.

2. Once the list is created, search for the people to follow and click follow button and then the add to list button thats it now they are in your list and you can access them at URL http://twitter.com/yourusername/listname

Koool!