Firstly a very happy new year to all coders here :) Hope this year brings lots of Accepted to you.
I have written this blog to help people who ask questions regarding how to change the handle. If you decide to change the handle, (and you thought twice about it, because it is irreversible and can be done only once) , this blog might help you.
This is a new year gift from codeforces and only valid for the first ten days.
Follow the mouse pointer and you are done!!!