I am drunk so I will only answer one of the questions of my choosing..... And it will be the one about the heater and noise being made while attempting to lucid dream... I love to have "white noise" while I am trying to fall asleep, otherwise it is too quiet for me and I start to think about all kinds of annoying things that tend to keep me awake and distracted from my goal. A fan or A/C or heater going often helps me to fall asleep and after a while you should be able to ignore it all together.. Its the other "random" noises that fucken annoy me, like birds chirping, or my dog barking, or telephones ringing, I hate that shit, but a constant noise that doesn't alter from its patern is music to my ears, it just really depends on the individual.