You can change the background of your PowerPoint slides using the "Format Background" feature located in the "Design" tab.

If you frequently use the same PowerPoint files as beginning files for your presentations, you could save yourself a lot of time and effort by saving them as templates in a folder. Once you have ...

Presentation expert Garr Reynolds says "backgrounds should be simple without lots of perceptible differences among the background image itself since this would interfere with the foreground elements." ...