Metric modulation was a gift given to me by one of my closest friends and musical partners and has changed my whole perception of rhythm.
The first step is to learn the chromatic scale on the fretboard from low e to high e on the twelth fret, asc. and desc. Eventually, you can apply this to all scales, patterns, arpeggios, etc. Metronome is essential. Hey, there's one in the lower left corner....Lucky you!
The first is the ascending pattern, the second is descending. Play all the notes in one position then shift the entire hand to the next four-note position. ASC=0penE.18.104.22.168...openA.22.214.171.124 SHIFT 126.96.36.199. SHIFT Dstring.188.8.131.52.8 SHIFT 184.108.40.206 etc.