This brand new DVD is available right now exclusively at guitarworld.com/store! Learn Slide Guitar is the ultimate DVD instructional guide to playing slide guitar like a pro. Designed for beginning-to-intermediate guitar players, this DVD contains more than two hours of lessons that will help you develop such skills and techniques as playing in open and standard tunings, slide scales for soloing in all keys, improvising, open-tuning chord forms, muting, vibrato, Delta and electric blues …