Preparation:

1. On your HOME-screen hit the Menu-Button and choose 'Settings':
   
2. Choose 'Applications':
   
3. Check 'Unknown Sources':
   

Downloading and Installing:

1. Go to the DOWNLOAD-PAGE and load the desired version.
   

2. Wait until the download is finished:
   
3. Click the item and your Android device will start installing:
   
4. The Permission needed to run AndNav are listed. Hit install:
   
5. The application is properly installed. You can hit 'Launch.
   
6. Further launches are made from the HOME-menu, just as you start any other application.

Best Regards,
Nicolas