To add alt text to images in PowerPoint, or edit an image's existing alt text, select the photo and choose "Edit Alt Text." ...

For text to overlap in PowerPoint 2007 it has to be entered into separate text boxes. If you think of each text box as a sticky-note, you can envision how PowerPoint works with objects.

Want to overlay Text on Video in PowerPoint? This tutorial shows how to insert a Video behind Text in PowerPoint to make your presentations cool.

If you label images in PowerPoint, you might have noticed that it's difficult to change the size of the text label and the image at the same time, unless you know this quick trick.