The Principles E-Book
I have been using the principles since 2004 and it has truely changed my playing from struggling to learn portions of songs to having the foundation and tools to tackle just about any song.
The principles will not make you play like a master overnight. You still have to do the work, but they make every other teaching aid you have and any lessons you may be taking actually *work*.
I strongly recommend combining this with The Path and the DVDs if at all possible.
$30.95