To view an element, ensure that the Properties view is opened in the foreground and select the element in the Project Explorer. The element will then be opened in the Properties view and a number of tabs relevant to that element will be available to maintain that element.
The right-click context menu in the Project Explorer allows you to access functionality for that element as well as view information related to the element.
Selecting to expand a modeling element in Project Explorer will load that element's sub-fragments. The modeling element's icon will change in the Project Explorer to mark that its sub-fragments have loaded.