How can I turn my slide show into a screensaver?

When you have finished your slideshow, turning it into a screensaver is easy. First navigate to the "Control Panel" (which is partially hidden at the left side of your screen until you move your pointer there). Then click on the "Export" button (indicated by an arrow pointing right) and select "Screen Saver" as your export type. To make your slideshow into your default screen saver just check the "Save as default screens saver" option.