In this lesson, Colin breaks down two of the most important tunings for slide guitar — Open D and Open E. You’ll learn not just how to tune your guitar to each, but why these tunings work so well for slide. Colin explains the note layout, the theory behind the tuning, how to reference standard tuning for comparison, and why understanding intervals like whole steps and half steps is essential. He also shares his personal recommendation for chromatic tuners and how to tune accurately every time.