I dont understand how the note in the bracket could be G, G i supposed to be above the line, not under? could you please tell me how I can see that this note is G?
The guy in the video is not playing exactly what is on the sheet. He is actually simplifying things a bit there, using the same part for the intro and the start of the verse. It's a choice you can make, but your note reading does not seem to be an issue here.