malletjazz.com FAQ pages
What books do you recommend for vibraphone and marimba studies?
Dave Samuels A Musical Approach to Four-Mallet Technique
Phil Kraus Modern Mallet Method (vol. I, II, III)
Leigh Howard Stevens Method of Movement for Marimba
Gordon Stout Ideo Kinetic Workbook for Marimba
George H. Green Instruction Course for Xylophone
Buster Bailey Mental and Manual Calisthenics
Pasquale Bona Rhythmical Articulation
David Friedman Dampening and Pedaling
John Mark Piper Shapes and Patterns of Music
...but none of these is a substitute for finding a good teacher, especially where four-mallet technique is concerned.