As long as they have access to a warm and cool hide, they will thermoregulate as they wish.
Yes, bp's are very head shy. Sometimes over time they get used to your touch, but it really depends on the snake.
I use common dish soap. But you can use a 5-10% bleach solution or chlorohexadine.
Bp's cannot be trained. They will do whatever they want. Most likely he is just looking for warmth or a dark place to hide. Maybe if you have a blanket on your lap with a little opening into a cave, he might go into it and chill, but don't expect it.
Yes, if handled too often they can become stressed. It's a good rule of thumb to handle (once they settle in to a new home) maybe two times a week for up to 30 minutes. But there's no real definitve amount of time.
Welcome btw!![]()