setting up iphone in another country

[tayviewer]

I bought a used iphone in the USA for use in the UK. I have put my sim card in and can make and receive calls. Not sure how I can link it with the itunes web site. What should I do about that and is there anyhting else I should be doing? Thanks

 

[labman]

what ya doing for Data plan? guessing you unlocked the phone.