How To Record An Audio CD Using iTunes/Burn (Burn is an app for Burning Stuff to Discs)

Hi. I want to record 12 songs onto an audio CD using an iMac Intel, using the app Burn, or the app iTunes. I don't know what to do. I recorded the songs onto my iMac with Youtube, and an extension for downloading music or videos from Youtube. Here is the link:

http://en.savefrom.net/1-how-to-download-youtube-video/

So I downloaded the songs, and I have an app called Burn. Here is the link:

http://burn-osx.sourceforge.net/Pages/English/home.html

So the app has done a great job. But, how do I upload the songs onto iTunes? Please help.

P.S.

Please tell me if I should use iTunes or Burn.

P.S.

My old user was roberto2057.