Okay, so I don't have this problem anymore. Well, last night, I had noticed that there was no desktop tile and if I typed "desktop" on the start screen there was no app for it Also, "Change PC Settings" wasn't starting. My guess is that it did that because I had a really hard time uninstalling a program so I had to try going by means of registry editing. So I ended up refreshing my computer (from the installation disc since PC settings wasn't working ) Now everything is back to normal. So all I want to know is how I can prevent this from happening again.
A good way would be to create a restore point before doing anything that may mess Windows 8 up. This way you could just do a system restore to a restore point dated before the action to undo it.