Setup iTunes account
how do I get to iTunes account setup page?
There are various ways of creating an account e.g. via http://appleid.apple.com or via your computer's iTunes
Creating an account : http://support.apple.com/kb/HT2731
If you don't want to give credit card details then you need to follow the instructions on this page when creating an account : http://support.apple.com/kb/HT2534
e.g. if using a computer's iTunes : https://discussions.apple.com/thread/5729572?answerId=24321860022#24321860022
if using an iOS device : https://discussions.apple.com/thread/5847690?answerId=24700173022#24700173022