How to read the tabs.
One plus symbol means to blow the harmonica hole, no + means to draw.
An apostrophe means to bend the note of a half step.
A double apostrophe means to bend the note of a whole step.
A triple apostrophe means to bend the note of three steps.
^ means playing the note with a ‘dip’ bending.
R before a note tells to reach that note with a glissando effect.
Sh is ‘Shake playing’ or ‘Warble.’