How to play harry potter on guitar

What does 0 mean in Guitar Tabs?

open string

What does () mean in Guitar Tabs?

When a note is in parentheses () in Guitar TAB , it either means to play a ghost note or that the note is continuing to ring out. In the below example, the notes in parentheses are ghost notes. This means you need to play the notes in the parentheses softer than the rest of the notes.