The appearance of the main Aperio eSlide Manager page varies according to how Aperio eSlide Manager is configured and which of the available data hierarchies have been defined for the user role or roles assigned to you.
The main page contains data icons that take you to the list page for each data category (such as Specimens, eSlides, and so on).
Note the Search box at the top of the page, from which you can run free-text or saved searches that let you find exactly what you are looking for.