Does my thermostat come pre-programmed, or do I need to set everything up from scratch?

Your thermostat is pre-programmed and ready to go. You only need to set the time and day for proper operation. The thermostat comes with energy-saving preset schedules that assume you wake at 6 am, leave at 8 am, return at 6 pm, and go to bed at 10 pm. (Page 3)