I'm about done mixing my songs and want to export them.    Exactly how do I export songs?   And one last question.   When I want to import the song back to do some Mastering, how do I do that?   I looked for videos on this but couldn't find any that fully explained it.
 
Thanks!
Greg

If you are exporting them for further processing (e.g. mastering) you would export them as a wave file (also known as broadcast wave).
 

Hi. I usually just Ctrl + A, and choose File, Export, Export Audio (I have set up Shift+A as my keystroke for Export Audio, and makes it even easier to do). Choose "What you hear". If you are going to import it again to master, leave bit depth and sample rate alone. When ready to import again, just drop from Browser or Desktop.
Hope it helps.
All the best.

Thanks, Dave and Ken!   
 
Greg