When I go to the Itunes store everything is in the wrong language

First make sure you are in the right country store. If the flag at the lower right (of any page in the iTunes Store) is not your country, click the flag to bring up the page where you can select the right country.

If you are in the right country store but are seeing the wrong language, consult this document:

iTunes: Changing the display language

Note that the setting for the store language is different than the setting for the language of iTunes itself.