Once you start working with the product and develop a workflow where you are assigned tickets on a regular basis, you require an organized queue of the ones that need your attention. This is called a "view" - when you get tickets assigned to you, a filter can be applied by choosing "me" in the agent field and other properties could be changed to see your prioritized list. 

Say, for instance, you are an agent who works on social tickets on a high priority - please choose the filters accordingly from the filters pane. You can also save the view if needed as "Tickets I'm working on".