I teach this tune in my Lesson Load Volume 9 https://www.daddystovepipe.com/guitar-lesson-pack-tabs-volume-9.php
My variation is based on the playing of Paul Geremia and Peter Keane.
Secret of E, basic tuning.
Initially a RB struck by Charles Brown and later on covered by Sam Cooke and numerous others.
I’m playing a 000, mahogany and spruce, made by David Newton from Beaumont Texas.