Q: I'm on the itunes store and everything is in Russian. I need english and how do I change the language?

I think there's supposed to be a little flag in some corner you click on.

On the iTunes Store homepage, look in the lower right hand horner. There should be a small round Russian flag icon. Click on it and you'll see a list of all the international stores to choose from.

But changing the country of the store where you are located will not let you purchase in the store specially if your account is not listed for the country that you are going to chose.

iTunes: Changing the display language - http://support.apple.com/kb/HT2242