is it hard to make the apps? i have not tried it yet. do you have to pay any money because in the registration you have to give your address and apple account info, but it says nothing about money. how do i get an app on the app store in itunes? do i get any money if i sell it for like 99 cents, if so, does apple get any of the money or do i get it all or any of it? and how do i get the money? thanks.