Watch the Rockin Chair Blues online guitar lesson by Joe Dalton from 50 Acoustic Blues Licks You MUST Know
In my opinion, one of the most interesting things about this chorus is the use of dissonance. Sometimes, we spend too much effort trying to make certain that what we choose to play always sounds consonant. How you resolve or not resolving a non-chordal tone can peak the listener's interest. This chorus can get you started with that journey.