Hi, Barney. Welcome to MR and congratulations for youru new Cybook.
- The Auto Off is always a good idea. After a certain time of inactivity, it turns off the Cybook, economizinig the battery. This is automatically disabled if you're hearing mp3s.
- About the light colours: Green = on, Orange = on and charging, Red = off and charging.
- When the battery is full, the light will turn off (if the Cybook was off) or green (if it was on).
Cheers!