Hi Yvonne. Welcome to justanswer.
You’ll need to physically connect the sat nav to a PC or Mac using the lead that came in the box. You need to download Garmin Express Software. I will be guiding you through.
Once you click this link below(CLICK HERE)A file will automatically get downloaded. Check your download section, a file named ELSINORE.SCREENCONNECT will be present. Just open that file so that I can connect to your computer.
Click this link below and then press I AGREE. Check your downloads and open the file named Elsinore.screenconnect
Are you using Windows computer?