Here are the simplest steps to follow in adding hyperlinks on your PowerPoint presentation:
1) Open an existing PowerPoint presentation or start working on it as you normally do.
2) Select a text on the slide you want to have to have the link connected. You can do it by dragging the word or words using your mouse.
3) Click “Insert” on the toolbar and select “Hyperlink” or you can use the shortcut key “Ctrl+K”. Wait for the ”Insert Hyperlink box” to appear.
4) In the “Link To” section which is located on the left side, click on the “Existing File” or “Web Page” if you want to use existing documents or website. Navigate afterwards the file you like to link in the “Look In” box. Or type the address in the “Address” field. Click “OK” and then your link is added.