You can click the Layer button at the bottom of the active window to open the Layer menu, which lists the numbers and names of all the layers on the current page, with the current layer highlighted.
From this menu you can
Related Topics
To change to a different layer
To select multiple layers
To select multiple layers that are not next to each other
To rename a layer
To add or delete layers
To change the order of layers
To move objects from one layer to another
To edit all layers