how do I purchase itunes songs

Hi discokachina,

Thanks for using Apple Support Communities. Based on what you stated, it sounds like you want to purchase songs from iTunes. I would recommend that you read this article, it may be able to help the issue.

How to browse and buy content from the iTunes Store - Apple Support

You can purchase items from the search results by clicking the Buy button next to any item, or you can add the item to your Wish List. You'll be asked to enter your Apple ID and password to confirm any purchase.

Cheers