You would need to get an iTunes account from an English speaking country and use that Apple ID to log into the iTunes Store. If you've already got a Germane account (sounds like you do), then you will then have to juggle two Apple ID's and iTunes accounts. You can't update apps except with the account they are purchased with.
Then again, you are just starting, so it might be a good idea to change to the country of your choice now, before you've spend much money.
There is no way to transfer or combine accounts at this time.
On the computer version of iTunes, at the bottom of the iTunes Store home page there is a Change Country link. You can use this to browse, but will not be able to make a purchase without an account for that store/country. Not all items are available in all countries.