Greeting's!
It Will Ask You To Input An Old Password "Current" Password And A "New" Password After That Is Done You Can Use The "New" Password Instead Of The "Old" Password.
Voice. voice uses the least bandwidth
Yes very much so! You could learn previous mistakes/bugs/etc and find solutions to fixing them and avoiding getting them. As well as much more. History is always a fun subject for anything, really in my opinion.
