When adding clip art to a slide you are limited to the pictures stored on your computer?

The answer is No.  When adding clip art to a slide you are not limited to the pictures stored on your computer.  We are not limited to using clip art from our computer. Any clip art can be used, but if it is from another source, it must first be saved to your computer as a file. 

Ineed more infomation

By default, powerpoint opens in normal view, displaying the thumbnails, notes and slide view. if you prefer, however, you can specify that powerpoint open in a different view, such as slide sorter view, slide show view, notes page view, and variations on normal view.