 To add text to your PowerPoint slide or poster, you need to add a text box. You can do that on the Insert tab in the Text section. Click on that text box button and draw a rectangle on your slide. Don't worry too much about placement or size. This is easily adjustable. You should see a cursor and you can start typing. I'm going to start with a title. I'll zoom in a bit so you can see what I actually typed. Now I'm going to do the same thing for my subtitles. To change the size of the font, select the box and use the font size drop down menu. You might have to experiment a little bit to see what you like. I'm going to zoom out a little bit and I can go to paragraph and change the alignment so maybe I want the title to be centered. I can also change the line spacing. I know it just says one line but it seems kind of wide to me. So I'm going to decrease that a bit. Again, just kind of play around with it, experiment and see what works best for you. I'm going to select all of my subtitles and change the size of the font at the same time. The size of the text should be hierarchical. So the title is the biggest, subtitles the next biggest. And your content, like the abstract text, should be next biggest. You might even have a fourth size if you want citations or image captions to be a little smaller. It's recommended that you don't go below 25 point font for any text as these posters will be viewed by people standing a ways away. As far as fonts go, make sure they're easy to read and graphic designers generally advise using two to three different fonts. I like to do a sans serif, a serif, and then one that's a little bold, just for variety. But it's up to you and what you like. And as you could see, moving the text boxes is easy. So don't worry about getting it perfect right away. You can adjust as you need to while adding more elements.