How to change the old apple ID on my iphone so I can update the apps from store?

My cousin gave her Iphone4 to me, i already changed the apple ID but when i tried to update the apps the she installed, it's still showing her apple id (with password required). How can i change it so i can update the apps.
*Even on candy crush, it shows her picture & her friend's instead of mine. I think that's the reason why I can't proceed to the next level. It keeps asking me to ask my friends on facebook*

Am I the only one who hates the 00s?

As in 2000s? I was born in '99. I wish I grew up in the 90s like my brothers.
TV shows were better, there were no iPhones or anything like that… People communicated.
The music was considerably better. I think people just created music and dumped it just to say it was made in the year 2000. Since then music's gotten a *tad* better, but everything else is still pretty bad.

Other people look fine in iphone selfshot i don't camera?

I'm a male and when I look in the mirror I look fine also when I take a picture of myself with my iphone in the mirror I look fine but when I point the Iphone at myself like arms-lenght I look very weird my hair looks weird and my face shape becomes different.

BUT WHEN i look on facebook and stuff and other places I see other people taking selfshots and they look fine they look like what they normally look you always see people taking pictures of themselfs at armslenght but why it gets so weird for me?

Added (1). Eddit: Still other people look fine on it how come i don't

Cute yet protective iPhone 4s cases?

Okay, I'm trying to find someone who sells cheap cases that are cute yet have screen protection since I drop my phone a lot I've tried etsy but its really expensive, and I've gone on eBay and amazon but I've had no luck. Can anyone recommend a amazon/eBay seller who has cases that fit my description?

I lost my music on itunes but have them on my iphone?

I lost my music on iTunes but have them on my iPhone, when i click on a song in iTunes it doesn't play and tells me to find the songs but i can't find them anywhere, i didn't buy the music from iTunes though, is there a way that i can transfer my music from my iPhone onto my computer?

How to transfer game saves/points between iOS devices?

I recently purchased a new iPhone 5 to replace my 5th gen iPod touch. I transferred all the games I have on my iPod to my iPhone through my iTunes account, but when I open the games on my iPhone, none of the points or progress I have saved on my iPod touch game show up. It's as if I just downloaded the app. Is there anyway to transfer my already earned points or progress in the game on one device to the game on the other device!

How to backup iPhone to iTunes?

I plugged in my iPhone 4 and it opened into iTunes. I right-clicked and selected "back up" and then it apparently loaded and backed up in all of 20 seconds. I don't trust it. What did it back up, and how can I view what as been backed up? Did it back up all of my info, including contacts, photos, emails, etc?