http://9to5mac.com/2013/09/18/ios-7-for-iphone-ipad-and-ipod-touch-released-heres-our-walkthrough/
http://howto.cnet.com/8301-11310_39-57603329-285/five-things-to-do-before-installing-ios-7/
http://money.cnn.com/2013/09/18/technology/mobile/ios-7/