Watch the 1 2 b3 3 Move online guitar lesson by Brad Carlton from Guitar Lab: Riff Generator
This lesson focuses on the four following tones: 1 2 b3 3. Diagrams 2a through 2d show the layout of these four tones in all four octaves. The layout involves all four notes residing on the same string. The intervals are as follows: major second between the 1 and the 2, minor second between the 2 and the b3, and minor second between the b3 and the 3. 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. By learning this three note group according to which octave you're in, you will view the unison groupings on adjacent strings. This offers you the option of playing the same notes on different strings for tonal and/or technical reasons. Each of these four diagrams show the unison groupings of this four note formula.
I will show you various ways of combining your left-hand techniques to create different riffs with the same four notes.