Latest 32++ Learn Slide Guitar Electric. Slide guitar lessons | learn to play slide guitar, 3 essential guitar chords how to play a 12 bar blues and 3 slide licks which will make you sound epic. This lesson is in the key of e and is an excerpt from my slide guitar open e tuning course. This hal leonard video tutorial series presented by guitar great david hamburger will introduce you to the exciting world of playing electric slide guitar in the open g and open e tunings!