Generally:
1. No, tortoises sleep in the dark. No lights. Only the heater to keep steady temperatures, if needed.
2. For baby tortoises - everyday bathing. For adults - once a week (more often won't hurt, though).
Hatchlings daily. Adults don't really need once a week. They should always have a low sided clay saucer water dish available, large enough they can get into. Once a month soaking for adults is enough, more is always better.