Sudden movements from a creature that scares you would likely startle you, well the BP will likely be afraid of you so the same applies. I know it does with my girl.
When you go to pick up the BP do so from the thickest point and kinda try to avoid the front part of their view, I've noticed this keeps my BP as well as my RTB from biting me at least. Also you can look up hook training, I havent read much about it but I know some use that method to teach the snake that a light tap by the hook means they are being picked up and it's okay.
Welcome welcome welcome! Just know they are like potato chips and you can't just have one c;