(At a Glance). The At a Glance series pairs an instructional DVD lesson taught by a professionl guitarist with a supplemental book for a comprehensive learning experience. The lessons are loaded with valuable tips and information, and popular song examples help to demonstrate the concepts in action. The DVD is filmed in high definition and features on-screen music. The book includes over 20 works in tes and tab by Beethoven, Corelli, Carcassi, Carulli, Sor, and more.