Hi, I'm teaching myself how to play the piano and read sheet music, so I have a question about how to play a certain note.

Here's the sheet music:
http://www.sharebigfile.com/file/163104/mai-otome-zwei-storm-pdf.html

In the fourth bar, the G is tied in the upper staff, but in the lower staff the same G is played. How do I play the same G if it's held down during a tie?

Thanks, I'll go try that.