Select the PowerPoint View tab to choose the view that's best for what you're doing. There are also icons in the task at the bottom of the screen to select a new view.
The default Normal setting is the best for creating and editing your slides.
Select Outline View to see all your slides listed in a column. Select Slide Sorter to see thumbnails of all your slides. You can reorganize your slides in either view by selecting and dragging it to a new location.
To View your speaker notes, select Notes Page. You'll see one slide at time.
To see your presentation full screen, select the Slide Show icon from the task bar at the bottom of the screen. If you want to see your current slide, next slide, and speaker notes while you present, select three dots at the bottom of screen, then Show Presenter View.
Note: Make universal style changes to every slide, notes page, or handout using the Slide, Handout, or Notes Master views on the ribbon.