As users interact with your product or service, they proceed through a series of steps called the usage lifecycle. The usage lifecyle is a mapping of the user’s experience with your design. Like other lifecycles, the usage lifecycle has a beginning, middle, and an end, each of which are characterized by different behaviors and goals. Though they be similar in every other way, people act very differently in each stage of the lifecycle.
Here is an overview of the stages:
When you start framing design in terms of the usage lifecycle, you begin to see how each stage has different design challenges. What was a huge show-stopping issue for users at first contact is never a problem for them in later stages. What is a complex issue during regular use never occurs to someone just starting out. In this way the point at which people are in the lifecycle determines context for the user as much as anything else. Just as much as we need to “know your user” we need to know what they’re doing…rather, where they are in the usage lifecycle.
Courtesy of : 52 weeks of UX