Firstly, welcome Bonnie!
1) During the cycling process I believe you don't need the lights on at all but I personally had mine on during regular daylight hours. (A timer on the powerpoint is really good to have the lights turning off at the same time every night.)
2) When your Ammonia and Nitrite levels begin to drop. This signals the cycle is ending.
3) Normal tank temperature is perfect. (26C or 78F)
You beat me too it joy!