How to burn itunes music onto a cd?

Maybe it's my computer but I don't think it's woring do you know how to do it? I did what it said at the bottom and it starts but then it stops and says error. Then I try again and it says the disc is not empty. What type of blank discs do you use

if you bought the songs then yes if you didn;t then no. you make a playlist then you burn it on a blank cd