Easy way to enhance your blues lead and rhythm – use Dominant 7 Triads – Blues Guitar Tutorial EP386
https://www.youtube.com/watch?v=JbgzA2NF9XA
simple blues guitar lesson
An Easy to Play Classic, R&B Guitar Lesson (Blues Rhythm Guitar Lesson) – MicroLesson (ML020)
https://www.youtube.com/watch?v=Qe5g0Vlf9As