How To Tune A Guitar by Mike Deiure Volume 1 Lesson 8 - Tuning - An In-Depth Look Volume 1 LessonsLesson 1 - Tune Up!Lesson 2 - Basic Playing TechniqueLesson 3 - Open ChordsLesson 4 - 12 Bar BluesLesson 5 - The Minor Pentatonic ScaleLesson 6 - Power ChordsLesson 7 - The FretboardLesson 8 - Tuning - An In-Depth LookLesson 9 - Bonus! - Performance Video Course Home Page
Good tip on harmonics.
Thanks Tom!