User testing

Basic usability test: Give the user a task, then observe the first thing a user does. Observe the steps taken to complete the task. How easy and straightforward was it for the user? How many errors did the user make? What are the user's expectations? How satisfied is the user at the end -- did it meet user's needs? Usability is important; if it's not intuitive and logical, if there are too many steps and too many deficiencies, the user will likely give up and leave.