I created a class on how to tune the guitar using just the E notes. It's an uncommon way to tune the guitar but very useful. You don't have to listen for five different tones with my technique. Btw, this is not just for guitarists. ANYONE can learn this skill. You can impress your friends at parties and get-togethers by tuning the resident guitar. Surprise your spouse or partner!
Here is the link to my class. Thank you, if you choose to enroll. I am happy to say it already has 25 students and several great reviews.