In this tutorial i will explain you where to find a unique powerpoint background and how to use them this in your presentation.
Finding your background
There are many free backgrounds that you can download and use. A good example of a site like that is this powerpoint background website. Here you can find many unique backgrounds.
Use them in your presentation
When you found a background that you like you need to download then to your computer and open your presentation. Next click on de the design tab in het menu of powerpoint. Then click on "Background styles", "Format background", "Fill", "Picture or texture fill", "File". In the file select popup select the downloaded file and then powerpoint will show your powerpoint background.