How to watch tutorial Videos
First of all go to video or tutorial that you need. Press Play button. As videos or tutorial starts go to "Toggle Full Screen Mode" showed at the right bottom corner of the video player window. This will take to the full screen video mode to understand the tutorial more clearly and visually.
How to Take the Backup of Atlantic Site
The Backup of "Atlantic Business Network" can be takan similar as the two other sites.. Just go to the "Components" Menu and Select "Akeeba Backup", after opening or starting the Akeeba Backup just go to the "Backup Now" and Backup will start to develop.. How to manage it and download it ,,, just follow the other 2 sites videos for managing the backups.