My iphone 4s won't let me go on itunes what do i do?

I want to buy a ringtone so i click the button buy new ringtones but it won't work so in go on the app store to download itunes. After i did that there was a button to click visit the itunes store i clicked that but it still won't work what do i do

Maybe you need to reset network settings because the network can cause this type of problem.

Go to apple

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