Two Hands, One Mind Book & CDs by Stephen Humphries
This book/cd combo by Stephen Humphries is so amazing! I believe that what he teaches in this book makes this the most usable HD book out there. I've purchased many books over the course of my playing career and I wish that I would've had this one when I first started. You will not regret spending time with this book! I use Stephen's methods with all my students, both beginner and advanced, and still personally practice with them today.