Is it really hard to replace Cracked iphone 5 Screen?

I'm thinking about buying iphone 5 that has cracked screen for $20 and i replace it my self with new screen i'm 16 i never replaced screen before but i'm really interested in doing this

Being a iphone nerd I can tell you doing it by yourself is COMPLETELY difficult, there's a serious of screws and bolts you have to organize and remember where they go and being careful and cautious the entire time, then having to reassemble it. It's better to get a professional to do it before you potentially ruin your phone

Iphone 5 screen display is much easier to replace than iPhone 4/4s because you open up the phone from the screen. Make sure you buying the full display assemble(Glass and LCD) or you have to transfer the LCD and other part to the new glass which is very hard. You just need to remove the 2 screw on the bottom. You will need a pentalobe screwdriver to remove the screw because apple doesn't like it when people take apart their iPhone. After you take off the screw you need a suction cup to pull out the display. You just need to open enough to put your nail into the hole and undo the clip then the screen open up. Don't go yanking it out because it connect with 3 cable. There's a metal shield you need to remove but first remove the 3 screws holding it. Then remove the metal shield you should see cable. Remove each cable with a spudger or your nail just be careful not to damage it. After that remove the old simply and put in the new one. You may still have to transfer the Home Button over if it doesn't come with the part. Here are the part on ebay for $55 each.

White-http://www.ebay.com/itm/231074016845

Black-http://www.ebay.com/itm/390651773032