To see a list of all of your customers click the Customers button in the left side navigation.

This will bring you to your customer list, which you can scroll through, or use the 'Search' button at the top of the screen to find a specific customer you are looking for. The list view will also show you the number of events that customer has attended and their Lifetime Value (which is represented by the term LTV) which displays all the money they have spent on your events.

Clicking a customer will bring you to that customers' detail page.