Customizing the Ribbon - the quick way
Customizing - Shortcut menu
The fastest way (sometimes refered to as the "power users" way) into Customizing the Ribbon is to right mouse click anywhere on the Task bar. From the Shortcut menu list that now is displayed, choose what action is needed to be taken.
Minimize the Ribbon - Command
Where screen space (sometimes referred to as real-estate) is at premium this could serve you well. As long as you know your way around the Ribbon and know the relationship between the Tabs and their commands. By clicking on the Tab the Ribbon commands will then appear. Click anywhere on the project area and the Ribbon commands disappear.
Undo the Minimize Ribbon
By right clicking on any one of the Tabs the Shortcut menu appears this time with the Minimize the Ribbon command checked. Click on the
Minimize the Ribbon command to uncheck it.