Music Notation

I am brand new to not only Harmonica but playing an instrument of any sort.
I have just subscribed to JPs course and would like to know why the music books included do not have any notation.
If I don’t know the tune how do I figure out the timing/duration of the notes
Greetings to you all
Bob

Tough one…and it’s impossible! Find it on youtube and listen to it a bunch!

Welcome to our group!

–BT