Segmentation allows you to group leads into distinct profiles for reporting and dynamic content. Here is how to create them. 

Go to Lead Database.

Click on New and then New Segmentation.

You can create up to 20 segmentations.

Enter a Name, click on Add Segment and name it.

Default cannot be moved, edited, or deleted.

Add as many segments as you want (up to 100).

Drag and drop the Segments around to change their order. Once done, click on Create.

 A lead will qualify for the first matching segment in the order defined.
You need to define segment rules before you can use your Segmentation.
Congratulations! You are one step closer to using Dynamic Content.