On the left-hand side, you'll find the name of the current scene that you're working in, next to an arrow. This arrow is inactive until you click to edit a symbol; when you enter into a symbol's individual stage, the name of the symbol will be displayed to the right of the name of the scene (and if you click another symbol inside of the symbol, that name will be displayed to the right again, adding on in nested hierarchy) while the arrow button will become active. You can click on the button to go up one level, or click on the name of any level in the hierarchy to return to that symbol or scene.
To the farthest right side you'll find the Edit Scene and Edit Symbol buttons, and a dropdown that will let you choose to zoom your stage to a certain percent, or show just the frame, or show everything on the stage regardless of whether or not it is within the visible frame.
