It sure looks like there's a ton of stuff for me to learn and get used to... coming from a 6 Plus.
Does the 1, 2, or 3 represent how hard you have to press the home button or does is represent how strong the feedback is? Or both?
In other words, is the pressure needed to activate the button the same and you choose different levels of feedback?
No, the 1, 2 or 3 is how much haptic feedback you get from the Taptic Engine.