Just go into the menu, then choose the settings icon (3rd row, 1st column), after that choose the first option, do that three times, then go 4 times down (to the 5th option), choose that, in this new menu choose the first item and change the language to English.
Here another tutorial, if you don't understand mine:
Then I had the home screen come up. I pressed the left silver key to get to the menu.
Scrolled down to the settings Icon, which is the gear and wrench picture, then pushed it.
Then pushed the settings icon which is the phone and gear icon.
Then pushed the general icon which is the phone and wrench Icon.
Then clicked the personalization icon, which is the top icon that I was already on.
Then scrolled down 5 titles titles and clicked on it.
Then clicked the top box which is phone language and clicked on the one that said english. The phone will restart and you can add your settings however you want to.