Presentations allow you to consolidate the content from documents and the data from spreadsheets and present them to an audience as formatted slides. You can link slides so when you update data, your slides update as well.
Creating a Presentation from Home
Create a Presentation by starting in Home and clicking Create, then selecting Presentation. If you have an existing presentation, double-click to open it and begin editing.
Importing an Existing PowerPoint
You can also import an existing PowerPoint™ document. Go to the File tab. Click Import and select From PPTX and choose the file. Now you are ready to begin editing your slide content.