Watch the b3 3 b7 Move online guitar lesson by Brad Carlton from Guitar Lab: Riff Generator
This lesson focuses on the three following tones: b3 3 b7. Diagram 9 shows the layout of these three tones on the entire fingerboard. You should view it two different ways: the b3 and 3 on one string and the b7 on the next lowest or highest string. The intervals are as follows: minor second between the b3 and the 3, an augmented fourth between the 3 and the b7. You will learn various warm-ups which will enhance your left-hand technique while drilling through these tones. These include hammer ons, pull offs, legato slides, bends and releases. I suggest learning this formula in each of the four octaves that are available. This offers you the option of playing the same notes on different strings for tonal and/or technical reasons.
I will show you various ways of combining your left-hand techniques to create different riffs with the same three notes.