Remove Screen? topic

I cracked my screen recently and it is the most annoying thing ever. And this little purple pixel is just creeping up it and every time I reboot my phone it gets bigger. So I went to look for a screen replacement and I found a 5.5 inch display but I don't have a clue on how to get my screen out. Since the back is not removable I can't find any videos or instructions on how to remove it. Could someone be of assistance?