Case Studies of Steel-String Guitar Diagnoses and Repairs-Learn to diagnose common problems relating to the adjustment upkeep and repair of your acoustic guitar as well as nylon-string guitars and ukuleles. Topics include: humidity - cracks - braces - bridge plates - frets - guitar action - intonation - neck angle - tuning machines - strings - strap buttons - end pins - buying a used guitar - cleaning & polishing - pickups - and much more.