How to apply free apple store
How to apply free.
iPhone 4, iOS 6.1.2, How to apply
Do you mean how to create an account without giving a credit card number ? If you do then there are instructions on this page for how to create one : http://support.apple.com/kb/HT2534 e.g. select a free app in the store and click on 'create Apple id' when 'buying' it.
If you mean something else ... ?