All about themes, Quick Styles, cell styles, and background styles
Apply or customize a document theme
Insert a picture or clip art
Reduce the file size of a picture
Change the brightness, contrast, or transparency of a picture
Get visual with SmartArt graphics
Add sound effects to a presentation
Tip To return all theme color elements to their original theme colors, you can click Reset before you click Save.
To insert a picture from a file, click File, and then locate the picture that you want to add.
To paste a picture from the Clipboard or another program, copy the picture, and then click Clipboard.
To use Clip Art, click Clip Art, and then type a word that describes the clip in the Search text box.
Tip To use the picture as the background for all of your slides, in the Format Background dialog box, click Apply to All.