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

Have you ever thought about doing a hand-drawn shape in PowerPoint plus adding a chalk effect to it so it will look like a person has drawn with their hands using some chalk? Well, in this tutorial, ...

To edit a footer in your PowerPoint slides and include citations or notes, you'll need to access the Header & Footer menu from the Insert tab.