Share 'Reading musical notation for the various Tutor books'

I decided to learn musical notation for the banjo so I could study and learn from the period books now available. But WTF, they are all written with different tunings for the banjo! How am I supposed to learn what is where, when the G might be an open string, or maybe it's the A, or even something else? How can one learn this? I can read for singing, for flute, and for mandolin. But this has me u…