Arlen presents a great video here, he is the founder of Hot Licks video, and is a great guitarist in his own right. His style is a little flashy for me, but one can learn a lot from him. His damping techniques are excellent, which all slide guitarist must master for really great tone and attack.
Proper slide technique, “box” patterns, blues, country & rock styles in open E & G tunings, as well as standard tuning slide, crucial right & left hand damping, slide tilting, hammer-ons & pull-offs, harmonics, vibrato, and styles of Duane Allman, Elmore James, Robert Johnson & Muddy Waters.(60 min.)
This is an excellent slide guitar and bottleneck instructional video.