Pick up a useful, Albert King-inspired bending lick by Stevie Ray Vaughan.
A short introduction to the tritone scale, its construction, how to use it and some basic fingerings for this scale on the guitar.
Learning how to play and apply these subs to your chord work and single-note solos can add an extra layer of harmonic sophistication to your playing.
Learn some cool variations of this progression that feature added chord changes and spicier harmony and voice-leading.
Regardless of what style music you play, it will do your ears and your chops good to go through each of these licks.
When it comes to spontaneous, improvised phrasing, there is perhaps no better blues-rock guitarist than Eric Clapton.
Learn some of the licks Sister Rosetta used and how to apply them into a traditional gospel chord progression and beyond.