The easiest way to add text to a slide is
to use one of the 23 text layouts that Power Point provides for the slides.
When choosing to add a new
slide to your presentation you should choose a layout that is appropriate
for the text you want to show on that particular slide.
If you wish to add text where the slide layout
does not already call for text you can do so by clicking "Insert"
"Text Box," as shown at right, then placing that new text box where you
wish on your slide.