Depending on your chosen User Interface style, commands are presented via the Ribbon or a standard menu.
The ribbon is composed of multiple tabs, which contains commands, further classified in sections.
There are two interesting commands at the top right area:
•Content selector: Allows you to choose the active tab in the dashboard area
•Minimize ribbon: Collapses the ribbon so it appears as a menu. Useful when trying to maximize the content area.
The classic menu is exactly that: classic. It contains the same commands but presented in a menu fashion way.