how do i purchase songs on i phone using i tunes

Hi afton.pitts,

Thanks for visiting Apple Support Communities.

You may find these articles helpful with purchasing songs on the iTunes Store:

iTunes: Using the iTunes Store for iPhone, iPad, and iPod touch

http://support.apple.com/kb/ht1491

iTunes Store: How iTunes Store purchases are billed

http://support.apple.com/kb/HT5582

Best,

Jeremy