The simplest way to edit text in images you're using in PowerPoint is simply to overlay text on or near the image. To do this, click the "Insert" tab in the menu and then, in the Text area, click ...

First, we are going to use a Blank Slide. On the Insert tab, click New Slide and select Blank. Then go to the WordArt tool on the right in the text category. Click on the drop-down arrow of the ...