Follow basic troubleshooting found in your user Guide for your phone.
Reset, restore, Service.
You have VoiceOver turned on. For everything you try to open you have to tap once and then double-tap it to proceed. VoiceOver is located under Settings>General>Accessibility.
It's tricky, but here is a solid link for you: http://support.apple.com/kb/HT3577
You have VoiceOver on. VoiceOver is for visually impaired people. To turn it off,
Double tap on the Settings app
Double tap on General
Use 3 fingers and move them from the bottom up (the same way you would normally scorll, but with 3 fingers)
Double tap on Accesibility
Double tap on VoiceOver
Double tap on the "Off" button
You should be using your iPhone normally now!