Notice
When you see a ghost note, play it. The note directly below that ghost note is not meant to be played. It was trancribed like this so players who are used to look at music score.(such as me...I don't really like looking at the numbers...I believe it's easier to read music than numbers...) find it easyer to understand.
It's purely a matter of visibility then. DON'T PLAY BOTH NOTES, just the ghost notes.
The rest is very simple. It's a second degree song.(Assuming there are 8 degrees, so it's fairly simple)